Copper Plates – The Academy of Natural Sciences

What were copper plates used for?

Programs & Events - The Academy of Natural Sciences of Drexel University

Inside the Collections - HOCU 2691 (U.S. National Park Service)

Academy of Natural Sciences sends visitors to the river - WHYY

Academy of Natural Sciences sends visitors to the river - WHYY

Copper Plates – The Academy of Natural Sciences

Academy Building - The Academy of Natural Sciences of Drexel University

Proceedings of the Academy of Natural Sciences of Philadelphia - Volume LXXVI, 1924.: 4°, OHLwd. (1924) 1. Aufl.

Programs & Events - The Academy of Natural Sciences of Drexel University

Academy Happenings - The Academy of Natural Sciences of Drexel University

Academy Happenings - The Academy of Natural Sciences of Drexel University

The Academy of Natural Sciences of Drexel University