The first Academy trip took most of the members to the Perkiomen Copper Mines by horse and buggy, April 18, 1812. During the ensuing years Academy personnel has been a part of thousands of treks into new collecting areas. Often the expeditions were privately financed or sent out by the Academy under grants from research foundations. Sometimes Academy scientists accompanied U. S. government expeditions. During recent years a committee of the council has acted to choose official names for special expeditions. The bulk of the documents relate to the latter; a typed list of all the named expeditions with locale and date is a part of this collection. Included are documents of general information, Academy publicity and statistical reports, and two boxes of papers on [UNK] [UNK] [UNK] Expedition, 1969.

Signers of papers have not been recorded.