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1943/12/09: E. Lowell Kammerer to Clarence E. Godshalk and all at the ArboretumDecember 9 1943
Kammerer, E. Lowell
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1944/03/03: Clarence E. Godshalk to Lewis (Louis B. Martin)March 3 1944
Godshalk, Clarence E.
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1944/07/23: E. Lowell Kammerer to Clarence E. Godshalk "and all at the Arboretum"July 23 1944
Kammerer, E. Lowell
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1945/07/14: Fleeta Brownwell Woodroffe to Clarence E. GodshalkJuly 14 1945
Woodroffe, Fleeta Brownwell