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Orchids collected in Costa Rica in 1925-1926 by Paul C. Standley
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Standley, Paul Carpenter Nov. 2, 1926 [to C. Schweinfurth]
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Standley, Paul Carpenter Nov. 12, 1926 [to C. Schweinfurth]
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Standley, Paul Carpenter Nov. 15, 1926 [to C. Schweinfurth]
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Schweinfurth, Charles June 10, 1927 [to P.C. Standley]
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Standley, Paul Carpenter June 13, 1927 [to C. Schweinfurth] [includes reply June 21, 1927]
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Standley, Paul Carpenter June 24, 1927 [to C. Schweinfurth]
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Schweinfurth, Charles July 1, 1927 [to P.C. Standley]
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Standley, Paul Carpenter July 8, 1927 [to C. Schweinfurth]
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Standley, Paul Carpenter July 14, 1927 [to C. Schweinfurth]
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Standley, Paul Carpenter Oct. 28, 1927 [to C. Schweinfurth]
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Standley, Paul Carpenter Nov. 16, 1927 [to C. Schweinfurth]
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Schweinfurth, Charles Dec. 12, 1928 [to P.C. Standley]
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Schweinfurth, Charles April 1929 [revisions or additions to Standley list]
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Schweinfurth, Charles April 13, 1929 [note]
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April 13, 1929 [Orchids collected in Costa Rica in 1925-1926 by Paul C. Standley]
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Schweinfurth, Charles May 27, 1929 [to P.C. Standley]
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Schweinfurth, Charles Oct. 31, 1930 [to P.C. Standley]
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Schweinfurth, Charles Dec. 10, 1930 [to P.C. Standley]
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Standley, Paul Carpenter Dec. 29, 1930 [to C. Schweinfurth]
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Schweinfurth, Charles March 3, 1931 [to P.C. Standley]
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Schweinfurth, Charles April 15, 1931 [to P.C. Standley]
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Schweinfurth, Charles undated [Weberbauer determinations]
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Schweinfurth, Charles April 22, 1931 [to P.C. Standley]
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Standley, Paul Carpenter April 24, 1931 [to C. Schweinfurth]
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Schweinfurth, Charles May 8, 1931 [to P.C. Standley]
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Schweinfurth, Charles Oct. 22, 1931 [to P.C. Standley]
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Schweinfurth, Charles April 27, 1932 [to P.C. Standley]
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Schweinfurth, Charles May 31, 1932 [to P.C. Standley]
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Standley, Paul Carpenter June 6, 1932 [to C. Schweinfurth]
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Schweinfurth, Charles Oct. 18, 1932 [to P.C. Standley]
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Standley, Paul Carpenter Nov. 2, 1932 [to C. Schweinfurth]
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Schweinfurth, Charles Nov. 8, 1932 [to P.C. Standley]
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Standley, Paul Carpenter Nov. 16, 1932 [to C. Schweinfurth]
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Schweinfurth, Charles Nov. 21, 1932 [to P.C. Standley]
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Standley, Paul Carpenter Dec. 6, 1932 [to C. Schweinfurth]
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Schweinfurth, Charles Dec. 13, 1932 [to P.C. Standley]
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Standley, Paul Carpenter Dec. 15, 1932 [to C. Schweinfurth]
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Schweinfurth, Charles Dec. 15, 1932 [to P.C. Standley]
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Schweinfurth, Charles Jan. 6, 1933 [to P.C. Standley]
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Schweinfurth, Charles Jan. 23, 1933 [to P.C. Standley]
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Standley, Paul Carpenter Feb. 2, 1933 [to C. Schweinfurth]
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Schweinfurth, Charles Feb. 6, 1935 [to P.C. Standley]
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Standley, Paul Carpenter Feb. 12, 1935 [to C. Schweinfurth]
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Schweinfurth, Charles March 15, 1935 [to P.C. Standley]
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Schweinfurth, Charles Nov. 30, 1935 [to P.C. Standley]
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Standley, Paul Carpenter Dec. 9, 1935 [to C. Schweinfurth]
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Schweinfurth, Charles April 28, 1936 [to P.C. Standley]
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Standley, Paul Carpenter May 3, 1936 [to C. Schweinfurth]
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Standley, Paul Carpenter June 4, 1936 [to C. Schweinfurth]
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Schweinfurth, Charles June 9, 1936 [to P.C. Standley]
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Standley, Paul Carpenter June 17, 1936 [to C. Schweinfurth]
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Schweinfurth, Charles June 26, 1936 [to P.C. Standley]
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Standley, Paul Carpenter June 30, 1936 [to C. Schweinfurth]
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Ames, Oakes July 14, 1936 [to P.C. Standley]
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Standley, Paul Carpenter July 14, 1936 [to C. Schweinfurth]
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Schweinfurth, Charles July 17, 1936 [to P.C. Standley]
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Standley, Paul Carpenter July 21, 1936 [to C. Schweinfurth]
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Schweinfurth, Charles Jan. 16, 1937 [to P.C. Standley]
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Schweinfurth, Charles Feb. 17, 1937 [to P.C. Standley]
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Standley, Paul Carpenter Feb. 21, 1937 [to C. Schweinfurth]
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Schweinfurth, Charles Feb. 25, 1937 [to P.C. Standley]
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Standley, Paul Carpenter March 3, 1937 [to C. Schweinfurth]
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Schweinfurth, Charles March 12, 1937 [to P.C. Standley]
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Standley, Paul Carpenter April 1, 1937 [to C. Schweinfurth]
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Schweinfurth, Charles June 7, 1937 [to P.C. Standley]
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Standley, Paul Carpenter June 14, 1937 [to C. Schweinfurth]
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Schweinfurth, Charles Dec. 9, 1937 [to P.C. Standley]
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Standley, Paul Carpenter Dec. 14, 1937 [to C. Schweinfurth]
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Schweinfurth, Charles Jan. 10, 1938 [to A. Smith]
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Schweinfurth, Charles Jan. 10, 1938 [to P.C. Standley]
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[Williams, Louis O.] Jan. 24, 1938 [to P.C. Standley]
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Standley, Paul Carpenter Jan. 28, 1938 [to L.O. Williams]
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Williams, Louis O. Feb. 1, 1938 [to P.C. Standley]
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Schweinfurth, Charles Feb. 16, 1938 [to P.C. Standley]
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Schweinfurth, Charles April 15, 1938 [to P.C. Standley]
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Standley, Paul Carpenter May 10, 1938 [to C. Schweinfurth]
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Schweinfurth, Charles May 13, 1938 [to P.C. Standley]
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Standley, Paul Carpenter Oct. 24, 1938 [to O. Ames] [includes reply from C. Schweinfurth Oct. 28, 1938]
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Feb. 20, 1939 [freight ticket]
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Williams, Louis O. Feb. 20, 1939 [to P.C. Standley]
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Schweinfurth, Charles July 27, 1940 [to P.C. Standley]
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undated [determinations list]
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Schweinfurth, Charles Sept. 24, 1940 [to P.C. Standley]
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Williams, Louis O. Oct. 10, 1940 [to P.C. Standley]
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Jan. 30, 1943 [to P.C. Standley]
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Standley, Paul Carpenter May 16, 1945 [to C. Schweinfurth] [includes reply May 21, 1945]
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Sept. 10, 1946 [to P.C. Standley]