Letters are mostly addressed to P.P. Calvert, as editor, and refer to various aspects of editorial business. Manuscripts are offered for publication, reviews and criticisms made of papers which have appeared in the "Entomological News," discussion of deposition of the type specimens described in the journal and of the matter of exchange fo specimens and reprints.

Archived from the Society's holdings, March 13, 1959

Philadelphia botanist, biographer, historian and professor, Harshberger's correspondence is chiefly with 86 other botanists. His book "Botanists of Philadelphia and Their Works," protrays a history of American botany along with the biographies.

Gift of Zoo-Botany Department, University of Pennsylvania through Dr. John Fogg and Mrs. Ida Langman, Dec. 21, 1959