Frederick Graff, Jr. (1817-1890), Engineer of Philadelphia Water Works and Photographer

Frederick Graff, Sr. (1775-1847), Engineer of Philadelphia Water Works

Photograph of Thomas Birch painting, View of the Chain Bridge and Falls of Schuylkill, Five Miles from Philadelphia, ca. 1806-07

Albumen print on card by Frederick Graff, Jr., ca. 1860-1870

Notations on verso by the photographer explaining the bridge and significance of the image

Card size 10 ⅞ x 13 ⅞”

Photo size 7 ¾ x 10”