Cite

The Rockville Bridge, Susquehanna River. North of Enola, Pennsylvania (GFB-469-235)

MLA

Plowden, David (1932). The Rockville Bridge, Susquehanna River. North of Enola, Pennsylvania (GFB-469-235). Box 81. 1969 April. https://collections.library.yale.edu/catalog/2042088.

APA, 6th edition

Plowden, David (1932). (["Box 81"])(1969 April)[The Rockville Bridge, Susquehanna River. North of Enola, Pennsylvania (GFB-469-235)]. https://collections.library.yale.edu/catalog/2042088.