Collection Timeline

1930 to 1948

1930
Paul L. Errington letter 1, August 6, 1930
Paul L. Errington letter 2, August 6, 1930
Paul L. Errington letter, November 14, 1930
Paul L. Errington letter, December 20, 1930
Aldo Leopold letter to Paul Errington, January 4, 1930
Aldo Leopold letter to Quinn, February 13, 1930
Aldo Leopold letter to Paul Errington, March 15, 1930
Aldo Leopold letter to Clark, April 18, 1930
Aldo Leopold letter to Paul Errington, December 23, 1930
Aldo Leopold letter to Paul Errington, January 23, 1930

1931
Paul L. Errington letter 1, February 11, 1931
Paul L. Errington letter, February 2, 1931
Paul L. Errington letter, July 23, 1931
Paul L. Errington letter, July 27, 1931
Paul L. Errington letter, October 9, 1931
Paul L. Errington letter, February 4, 1931
Paul L. Errington letter 2, February 11, 1931
Paul L. Errington letter, September 21, 1931
Paul L. Errington letter, August 25, 1931
Paul L. Errington letter 1, November 18, 1931
Paul L. Errington letter, September 23, 1931
Paul L. Errington letter, October 14, 1931
Paul L. Errington letter, September 28, 1931
Paul L. Errington letter, September 30, 1931
Paul L. Errington letter, November 6, 1931
Paul L. Errington letter, October 15, 1931
Paul L. Errington letter 2, November 18, 1931
Paul L. Errington letter, December 8, 1931
Aldo Leopold letter to Lyter, March 20, 1931
Aldo Leopold letter to Grange, April 28, 1931
Aldo Leopold letter to Paul Errington, July 9, 1931
Letter from Bennitt to Aldo Leopold, September 19, 1931
Aldo Leopold letter to Bennitt, September 29, 1931
Aldo Leopold letter to Paul Errington, June 28, 1931
Letter from Anderson to Aldo Leopold, October 5, 1931

1932
Paul L. Errington letter, January 15, 1932
Paul L. Errington letter, March 17, 1932
Paul L. Errington letter 2, April 7, 1932
Paul L. Errington letter 2, June 15, 1932
Paul L. Errington letter, July 16, 1932
Paul L. Errington letter, July 29, 1932
Paul L. Errington letter 1, August 9, 1932
Paul L. Errington letter 2, August 9, 1932
Paul L. Errington letter, August 17, 1932
Paul L. Errington letter 1, August 31, 1932
Paul L. Errington letter 2, August 31, 1932
Paul L. Errington letter, September 16, 1932
Paul L. Errington letter 1, October 3, 1932
Paul L. Errington letter 2, October 3, 1932
Paul L. Errington letter, November 9, 1932
Paul L. Errington letter, December 8, 1932
Paul L. Errington letter, December 12, 1932
Paul L. Errington letter, December 15, 1932
Paul L. Errington letter 2, January 26, 1932
Paul L. Errington letter 1, January 26, 1932
Paul L. Errington letter, February 2, 1932
Paul L. Errington letter, February 13, 1932
Paul L. Errington letter, February 16, 1932
Paul L. Errington letter, February 23, 1932
Paul L. Errington letter 1, February 25, 1932
Paul L. Errington letter 2, February 25, 1932
Paul L. Errington letter, March 11, 1932
Paul L. Errington letter 1, April 7, 1932
Paul L. Errington letter 1, June 7, 1932
Paul L. Errington letter 2, June 7, 1932
Paul L. Errington letter, June 11, 1932
Paul L. Errington letter 1, June 15, 1932
Paul L. Errington letter 3, June 15, 1932
Paul L. Errington letter, June 23, 1932
Paul L. Errington letter 1, July 1, 1932
Paul L. Errington letter 2, July 1, 1932
Paul L. Errington letter, July 11, 1932
Paul L. Errington letter, July 30, 1932
Paul L. Errington letter 1, August 6, 1932
Paul L. Errington letter 2, August 6, 1932
Paul L. Errington letter 1, September 1, 1932
Paul L. Errington letter 2, September 1, 1932
Paul L. Errington letter, September 14, 1932
Paul L. Errington letter 1, October 5, 1932
Paul L. Errington letter 2, October 5, 1932
Paul L. Errington letter, October 19, 1932
Paul L. Errington letter, October 21, 1932
Paul L. Errington letter 1, November 3, 1932
Paul L. Errington letter 2, November 3, 1932
Paul L. Errington letter, November 5, 1932
Paul L. Errington letter, November 22, 1932
Aldo Leopold letter to Paul Errington, February 3, 1932
Aldo Leopold letter to Lincoln, March 1, 1932
Aldo Leopold letter to Johnson, July 22, 1932
Aldo Leopold letter to Treneman, August 10, 1932
Aldo Leopold letter to Chase, August 16, 1932
Aldo Leopold letter to Bode, August 19, 1932
Aldo Leopold letter to Paul Errington, September 8, 1932
Aldo Leopold letter to Bode, September 16, 1932
Aldo Leopold letter to Darling, September 23, 1932
Aldo Leopold letter to Darling, September 28, 1932
Aldo Leopold letter to Paul Errington, October 11, 1932
Aldo Leopold letter to Paul Errington, November 23, 1932
Aldo Leopold letter to Storer, December 7, 1932
Aldo Leopold letter to Drake, February 24, 1932
Aldo Leopold letter to Paul Errington, February 29, 1932
Aldo Leopold letter to Schuenke, June 4, 1932
Aldo Leopold letter to Olin, August 12, 1932
Aldo Leopold letter to Gordon, August 26, 1932
Aldo Leopold letter to Paul Errington, November 7, 1932
Aldo Leopold letter to Paul Errington, November 28, 1932
Aldo Leopold letter to Rapp, December 16, 1932

1933
Paul L. Errington letter 1, January 24, 1933
Paul L. Errington letter 2, January 24, 1933
Paul L. Errington letter, January 27, 1933
Paul L. Errington letter, February 16, 1933
Paul L. Errington letter, April 11, 1933
Paul L. Errington letter 3, May 4, 1933
Paul L. Errington letter, May 9, 1933
Paul L. Errington letter, May 10, 1933
Paul L. Errington letter 1, May 19, 1933
Paul L. Errington letter 3, June 30, 1933
Paul L. Errington letter, July 27, 1933
Paul L. Errington letter, September 29, 1933
Paul L. Errington letter 1, October 5, 1933
Paul L. Errington letter 2, October 5, 1933
Paul L. Errington letter, October 25, 1933
Paul L. Errington letter, October 28, 1933
Paul L. Errington letter, October 31, 1933
Paul L. Errington letter 2, December 7, 1933
Paul L. Errington letter 2, December 12, 1933
Paul L. Errington letter 1, February 9, 1933
Paul L. Errington letter 2, February 9, 1933
Paul L. Errington letter, February 13, 1933
Paul L. Errington letter, March 11, 1933
Paul L. Errington letter 1, March 17, 1933
Paul L. Errington letter 2, March 17, 1933
Paul L. Errington letter, March 18, 1933
Paul L. Errington letter 1, March 30, 1933
Paul L. Errington letter 2, March 30, 1933
Paul L. Errington letter, April 7, 1933
Paul L. Errington letter, April 13, 1933
Paul L. Errington letter 1, May 4, 1933
Paul L. Errington letter 2, May 4, 1933
Paul L. Errington letter 4, May 4, 1933
Paul L. Errington letter 5, May 4, 1933
Paul L. Errington letter, May 18, 1933
Paul L. Errington letter 2, May 19, 1933
Paul L. Errington letter 3, May 19, 1933
Paul L. Errington letter 1, May 31, 1933
Paul L. Errington letter 2, May 31, 1933
Paul L. Errington letter, June 8, 1933
Paul L. Errington letter 1, June 30, 1933
Paul L. Errington letter 2, June 30, 1933
Paul L. Errington letter, July 12, 1933
Paul L. Errington letter, August 23, 1933
Paul L. Errington letter, September 9, 1933
Paul L. Errington letter 1, September 20, 1933
Paul L. Errington letter 2, September 20, 1933
Paul L. Errington letter, October 9, 1933
Paul L. Errington letter, October 11, 1933
Paul L. Errington letter, October 16, 1933
Paul L. Errington letter, October 26, 1933
Paul L. Errington letter, October 30, 1933
Paul L. Errington letter 1, November 3, 1933
Paul L. Errington letter 2, November 3, 1933
Paul L. Errington letter 1, December 7, 1933
Paul L. Errington letter 1, December 12, 1933
Paul L. Errington letter 3, December 12, 1933
Paul L. Errington letter, December 14, 1933
Paul L. Errington letter 1, December 20, 1933
Paul L. Errington letter 2, December 20, 1933
Paul L. Errington letter 3, December 20, 1933
Aldo Leopold letter to Bode, March 11, 1933
Paul Errington letter to Aldo Leopold, March 14, 1933
Aldo Leopold letter to Paul Errington, March 20, 1933
Aldo Leopold letter to Paul Errington, March 20, 1933 copy
Aldo Leopold letter to Boone, March 20, 1933
Aldo Leopold letter to Paul Errington, April 17, 1933
Aldo Leopold letter to Paul Errington, April 24, 1933
Aldo Leopold letter to Paul Errington, April 28, 1933
Aldo Leopold letter to Paul Errington, May 19, 1933
Aldo Leopold letter to Paul Errington, June 1, 1933
Aldo Leopold letter to DuMont, July 31, 1933
Aldo Leopold letter to Paul Errington, September 6, 1933
Aldo Leopold letter to Paul Errington, September 19, 1933
Aldo Leopold letter to Locke, September 25, 1933
Aldo Leopold letter to Paul Errington, October 13, 1933
Aldo Leopold letter to Paul Errington, October 14, 1933
Aldo Leopold letter to Dana, October 14, 1933
Aldo Leopold letter to Paul Errington, October 16, 1933
Aldo Leopold letter to Anderson, October 18, 1933
Aldo Leopold letter to Locke, October 23, 1933
Aldo Leopold letter to DuMont, October 26, 1933
Aldo Leopold letter to Paul Errington, December 14, 1933
Letter from Challoner to Aldo Leopold, December 20, 1933
Aldo Leopold letter to Buford, December 26, 1933
Aldo Leopold letter to Paul Errington, December 26, 1933

1934
Aldo Leopold letter to Paul Errington, January 2, 1934
Aldo Leopold letter to Willard, January 5, 1934
Aldo Leopold letter to Paul Errington, January 12, 1934
Aldo Leopold letter to Elton, January 22, 1934
Aldo Leopold letter to Swanson, February 3, 1934
Aldo Leopold letter to Generosoff, February 26, 1934
Aldo Leopold letter to Horn, March 1, 1934
Letter from Lumley to Aldo Leopold, March 7, 1934
Letter from Cattell to Aldo Leopold, March 29, 1934
Aldo Leopold letter to Hamilton, April 2, 1934
Aldo Leopold letter to Paul Errington, April 23, 1934
Aldo Leopold letter to Horn, April 24, 1934
Aldo Leopold letter to Horn, May 7, 1934
Letter from Hamerstrom to Aldo Leopold, May 23, 1934
Aldo Leopold letter to Paul Errington, May 28, 1934
Letter to Aldo Leopold, May 28, 1934
Aldo Leopold letter to Webster, June 5, 1934
Aldo Leopold letter to Paul Errington, June 25, 1934
Aldo Leopold letter to Paul Errington, August 3, 1934
Aldo Leopold letter to Butler, August 3, 1934
Aldo Leopold letter to Allen, August 7, 1934
Letter from Butler to Aldo Leopold, August 8, 1934
Aldo Leopold letter to Paul Errington, August 10, 1934
Aldo Leopold letter to Paul Errington, August 13, 1934
Aldo Leopold letter to Paul Errington, September 5, 1934
Aldo Leopold letter to Paul Errington, September 22, 1934
Aldo Leopold letter to Paul Errington, October 3, 1934
Aldo Leopold letter to Paul Errington, October 4, 1934
Aldo Leopold letter to Boone, October 4, 1934
Aldo Leopold letter to Butler, October 10, 1934
Aldo Leopold letter to Paul Errington, October 10, 1934
Aldo Leopold letter to Paul Errington, October 10, 1934 second letter
Aldo Leopold letter to Paul Errington, October 26, 1934
Aldo Leopold letter to Butler, November 3, 1934
Aldo Leopold letter to Paul Errington, December 1, 1934
Aldo Leopold letter to Allen, December 5, 1934
Aldo Leopold letter to Paul Errington, December 6, 1934
Aldo Leopold letter to Paul Errington, December 8, 1934
Aldo Leopold letter to Paul Errington, December 14, 1934
Aldo Leopold letter to Schuenke, August 13, 1934
Aldo Leopold letter to Walcott, January 20, 1934
Aldo Leopold letter to Paul Errington, September 21, 1934
Aldo Leopold letter to Boone, October 26, 1934
Aldo Leopold letter to Friedmann, November 5, 1934
Aldo Leopold letter to McAtee, December 3, 1934
Aldo Leopold letter to Butler, December 6, 1934

1935
Aldo Leopold letter to Paul Errington, January 11, 1935
Aldo Leopold letter to Friedmann, January 11, 1935
Letter from Friedmann to Aldo Leopold, January 16, 1935
Aldo Leopold letter to Paul Errington, January 21, 1935
Aldo Leopold letter to Paul Errington, January 29, 1935
Aldo Leopold letter to Darling, February 1, 1935
Aldo Leopold letter to Paul Errington, February 11, 1935
Aldo Leopold letter to Darling, February 11, 1935
Aldo Leopold letter to Boone, March 1, 1935
Aldo Leopold letter to Allee, March 11, 1935
Aldo Leopold letter to Paul Errington, April 9, 1935
Aldo Leopold letter to Paul Errington, May 6, 1935
Aldo Leopold letter to Paul Errington, May 21, 1935
Aldo Leopold letter to Paul Errington, June 7, 1935
Aldo Leopold letter to Stevens, July 9, 1935
Letter from Ferguson to Aldo Leopold, December 18, 1935
Aldo Leopold letter to Aldo Leopold, January 8, 1935
Aldo Leopold letter to Paul Errington, February 20, 1935
Letter from Boone to Aldo Leopold, March 4, 1935
Aldo Leopold letter to Eaton, June 10, 1935

1936
Aldo Leopold letter to Anderson, January 7, 1936
Aldo Leopold letter to Paul Errington, January 29, 1936
Aldo Leopold letter to Gastrow, February 25, 1936
Aldo Leopold letter to Paul Errington, February 28, 1936
Aldo Leopold letter to Gastrow, March 6, 1936
Aldo Leopold letter to Paul Errington, March 19, 1936
Aldo Leopold letter to Horn, May 1, 1936
Aldo Leopold letter to Paul Errington, May 14, 1936
Aldo Leopold letter to Paul Errington, May 25, 1936
Letter to Aldo Leopold, June 10, 1936
Aldo Leopold letter to Paul Errington, July 24, 1936
Aldo Leopold letter to Paul Errington, October 2, 1936
Aldo Leopold letter to Paul Errington, October 31, 1936
Aldo Leopold letter to Paul Errington, November 6, 1936
Letter from Stoddard to Aldo Leopold, March 20, 1936
Aldo Leopold letter to Stoddard, April 7, 1936
Letter from Stoddard to Aldo Leopold, April 18, 1936
Aldo Leopold letter to McAtee, May 7, 1936
Aldo Leopold letter to Cooper, June 1, 1936
Aldo Leopold letter to Baker, November 12, 1936

1937
Aldo Leopold letter to Paul Errington, January 13, 1937
Aldo Leopold letter to Paul Errington, January 28, 1937
Aldo Leopold letter to Baker, February 11, 1937
Aldo Leopold letter to Gastrow, February 25, 1937
Aldo Leopold letter to Gastrow, March 16, 1937
Aldo Leopold letter to Paul Errington, March 16, 1937
Aldo Leopold letter to McCullough, April 28, 1937
Aldo Leopold letter to Paul Errington, April 28, 1937
Aldo Leopold letter to Paul Errington, June 21, 1937
Aldo Leopold letter to Pough, July 3, 1937
Aldo Leopold letter to Paul Errington, July 13, 1937
Aldo Leopold letter to Stoddard, July 22, 1937
Aldo Leopold letter to Paul Errington, August 2, 1937
Aldo Leopold letter to Paul Errington, September 11, 1937
Aldo Leopold letter to Paul Errington, September 18, 1937
Aldo Leopold letter to Paul Errington, September 23, 1937
Aldo Leopold letter to Paul Errington, October 19, 1937
Aldo Leopold letter to Paul Errington, November 17, 1937
Aldo Leopold letter to Peffley, May 11, 1937
Aldo Leopold letter to Paul Errington, June 26, 1937
Letter from Schunke to Paul Errington, July 24, 1937
Paul Errington letter to Schunke, July 27, 1937
Letter from Frison to Aldo Leopold, September 22, 1937
Aldo Leopold letter to Paul Errington, October 7, 1937
Aldo Leopold letter to Paul Errington, December 15, 1937

1938
Aldo Leopold letter to Albert, January 20, 1938
Aldo Leopold letter to Paul Errington, January 31, 1938
Aldo Leopold letter to Paul Errington, March 1, 1938
Aldo Leopold letter to Paul Errington, March 22, 1938
Aldo Leopold letter to Pough, April 13, 1938
Aldo Leopold letter to Baker, June 15, 1938
Aldo Leopold letter to Hubbs, June 20, 1938
Aldo Leopold letter to Fred, September 8, 1938
Aldo Leopold letter to Paul Errington, September 8, 1938
Aldo Leopold letter to Paul Errington, September 19, 1938
Letter from Fred to Aldo Leopold, September 22, 1938
Aldo Leopold letter to Gastrow, December 6, 1938
Aldo Leopold letter to Paul Errington, December 15, 1938
Aldo Leopold letter to Carrier, February 26, 1938
Aldo Leopold letter to McAtee, March 9, 1938
Aldo Leopold letter to Paul Errington, May 4, 1938

1939
Aldo Leopold letter to Paul Errington, January 3, 1939
Aldo Leopold letter to Paul Errington, January 19, 1939
Aldo Leopold letter to Gastrow, February 8, 1939
Aldo Leopold letter to Paul Errington, February 9, 1939
Aldo Leopold letter to Paul Errington, February 25, 1939
Aldo Leopold letter to Paul Errington, February 28, 1939
Aldo Leopold letter to Gastrow, March 13, 1939
Aldo Leopold letter to Steen, March 25, 1939
Aldo Leopold letter to Paul Errington, April 6, 1939
Aldo Leopold letter to Paul Errington, October 13, 1939
Aldo Leopold letter to Gastrow, October 13, 1939
Aldo Leopold letter to Scott, October 13, 1939
Letter from Scott to Aldo Leopold, October 19, 1939 copy
Aldo Leopold letter to Paul Errington, November 2, 1939
Aldo Leopold letter to Paul Errington, November 20, 1939
Aldo Leopold letter to Paul Errington, December 16, 1939
Letter from Scott to Aldo Leopold, October 19, 1939

1940
Aldo Leopold letter to Paul Errington, February 9, 1940
Aldo Leopold letter to Paul Errington, February 23, 1940
Aldo Leopold letter to Butler, April 2, 1940
Aldo Leopold letter to Paul Errington, April 2, 1940
Aldo Leopold letter to Paul Errington, April 13, 1940
Aldo Leopold letter to Paul Errington, May 1, 1940
Aldo Leopold letter to Scott, May 1, 1940
Aldo Leopold letter to Paul Errington, May 9, 1940
Aldo Leopold letter to Paul Errington, May 24, 1940
Aldo Leopold letter to Paul Errington, August 27, 1940
Aldo Leopold letter to Paul Errington, October 22, 1940
Aldo Leopold letter to Paul Errington, November 1, 1940
Aldo Leopold letter to Paul Errington, November 8, 1940
Aldo Leopold letter to Paul Errington, November 27, 1940
Aldo Leopold letter to Paul Errington, September 4, 1940

1941
Aldo Leopold letter to Gastrow, January 7, 1941
Aldo Leopold letter to Paul Errington, January 7, 1941
Aldo Leopold letter to Wade, January 29, 1941
Aldo Leopold letter to Van Tyne, February 6, 1941
Aldo Leopold letter to Paul Errington, February 27, 1941
Aldo Leopold letter to Paul Errington, March 13, 1941
Aldo Leopold letter to Paul Errington, June 13, 1941
Aldo Leopold letter to Gastrow, September 16, 1941
Aldo Leopold letter to Paul Errington, April 10, 1941
Aldo Leopold letter to Paul Errington, November 4, 1941
Aldo Leopold letter to Paul Errington, December 15, 1941
Aldo Leopold letter to Paul Errington, September 13, 1941
Aldo Leopold letter to Paul Errington, November 14, 1941

1942
Aldo Leopold letter to Paul Errington, January 16, 1942
Aldo Leopold letter to Paul Errington, February 20, 1942
Aldo Leopold letter to Scott, May 5, 1942
Aldo Leopold letter to Scott, June 9, 1942
Aldo Leopold letter to Paul Errington, October 2, 1942
Aldo Leopold letter to Paul Errington, October 12, 1942
Aldo Leopold letter to Paul Errington, November 20, 1942
Aldo Leopold letter to Paul Errington, November 21, 1942
Aldo Leopold letter to Paul Errington, November 25, 1942
Aldo Leopold letter to Paul Errington, December 16, 1942

1943
Aldo Leopold letter to Paul Errington, January 8, 1943
Aldo Leopold letter to Stoddard, January 13, 1943
Aldo Leopold letter to Yeatter, January 20, 1943
Aldo Leopold letter to Paul Errington, February 11, 1943
Aldo Leopold letter to Paul Errington, February 22, 1943
Aldo Leopold letter to Paul Errington, March 24, 1943
Aldo Leopold letter to Paul Errington, April 7, 1943
Aldo Leopold letter to Paul Errington, April 8, 1943
Aldo Leopold letter to Scott, June 24, 1943
Aldo Leopold letter to Paul Errington, September 17, 1943
Aldo Leopold letter to Paul Errington, September 29, 1943
Aldo Leopold letter to Nice, November 17, 1943
Aldo Leopold letter to Paul Errington, November 19, 1943
Aldo Leopold letter to Stoddard, November 19, 1943
Aldo Leopold letter to Paul Errington, March 12, 1943
Aldo Leopold letter to Paul Errington, March 17, 1943
Aldo Leopold letter to Paul Errington, July 12, 1943
Aldo Leopold letter to Paul Errington, September 4, 1943
Aldo Leopold letter to Drake, November 9, 1943

1944
Aldo Leopold letter to Paul Errington, May 9, 1944
Letter from Terrell to Aldo Leopold, August 10, 1944
Aldo Leopold letter to Terrell, August 18, 1944
Aldo Leopold letter to Paul Errington, August 19, 1944
Aldo Leopold letter to Terrell, August 30, 1944
Aldo Leopold letter to Grimmer, December 12, 1944
Aldo Leopold letter to Paul Errington, December 12, 1944
Aldo Leopold letter to Wing, December 19, 1944
Aldo Leopold letter to Paul Errington, December 22, 1944
Aldo Leopold letter to Zimmerman, February 25, 1944
Paul Errington letter to Aldo Leopold, March 4, 1944
Aldo Leopold letter to Paul Errington, March 24, 1944
Aldo Leopold letter to Paul Errington, April 12, 1944
Paul Errington letter to Aldo Leopold, April 17, 1944
Aldo Leopold letter to Paul Errington, April 28, 1944
Letter to Aldo Leopold, May 6, 1944
Aldo Leopold letter to Grimmer, May 29, 1944
Aldo Leopold letter to Paul Errington, September 5, 1944
Paul Errington letter to Aldo Leopold, September 21, 1944

1945
Aldo Leopold letter to Paul Errington, February 3, 1945
Aldo Leopold letter to Paul Errington, March 4, 1945
Aldo Leopold letter to Paul Errington, April 10, 1945
Aldo Leopold letter to Paul Errington, April 18, 1945
Aldo Leopold letter to Stoddard, May 17, 1945
Aldo Leopold letter to Paul Errington, June 9, 1945
Aldo Leopold letter to Paul Errington, June 21, 1945
Aldo Leopold letter to Einarsen, June 23, 1945
Aldo Leopold letter to Paul Errington, July 25, 1945
Aldo Leopold letter to Gastrow, September 26, 1945
Aldo Leopold letter to Paul Errington, November 20, 1945
Aldo Leopold letter to Paul Errington, December 7, 1945
Aldo Leopold letter to Bromley, August 31, 1945
Aldo Leopold letter to Skiff, September 27, 1945

1946
Aldo Leopold letter to Paul Errington, January 13, 1946
Aldo Leopold letter to Paul Errington, January 14, 1946
Aldo Leopold letter to Paul Errington, January 21, 1946
Aldo Leopold letter to Paul Errington, February 22, 1946
Aldo Leopold letter to Paul Errington, June 26, 1946
Aldo Leopold letter to Paul Errington, August 23, 1946
Aldo Leopold letter to Storer, February 9, 1946
Aldo Leopold letter to Paul Errington, November 21, 1946
Aldo Leopold letter to Stiles, December 16, 1946
Aldo Leopold letter to Cole, December 23, 1946
Aldo Leopold letter to Paul Errington, December 27, 1946
Aldo Leopold letter to Paul Errington, December 31, 1946

1947
Aldo Leopold letter to Paul Errington, January 10, 1947
Aldo Leopold letter to Paul Errington, January 21, 1947
Aldo Leopold letter to Thompson, January 21, 1947
Aldo Leopold letter to Gastrow, January 30, 1947
Aldo Leopold letter to Paul Errington, February 14, 1947
Aldo Leopold letter to Paul Errington, February 24, 1947
Aldo Leopold letter to Korstian, March 21, 1947
Aldo Leopold letter to Paul Errington, September 2, 1947
Aldo Leopold letter to Callenbach, July 10, 1947
Aldo Leopold letter to Paul Errington, October 6, 1947
Aldo Leopold letter to Paul Errington, December 17, 1947
Aldo Leopold letter to Paul Errington, December 1947
Aldo Leopold letter to Paul Errington, December 1947 follow up

1948
Aldo Leopold letter to Horn, February 2, 1948
Aldo Leopold letter to Paul Errington, March 8, 1948
Aldo Leopold letter to Cutermuth, February 18, 1948