Penn. flora.

Map of Pennsylvania colored to illustrate the distribution of its flora by Thos. C. Porter, Professor of Botany in Lafayette College, Easton, Pa. Engraved by W.S. Barnard, N.Y. (Published by Stedman, Brown & Lyon, Philadelphia, 1872)

Porter, Thomas Conrad, 1822-1901

1872

1872

Stedman, Brown & Lyon

1:1 200 000

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