Topics Technology & Engineering

Black and white photo of a man wearing a hat and standing on a bridge with his arm on a post

Wood truss drawbridge, Orthodox Street over Frankford Creek, 1899 [Detail]

Black and white photo of a low bridge over a creek

Bridge Street Draw, July 26, 1897

Black-and-white photo of an ash car, side view, in the doorway of a barn with trees behind

Car 2615, Brill, 1909, Brill Curtis trucks

Black-and-white diagram of a Philadelphia ash car

Philadelphia Ash Service – Plan, Side and End Elevations of Car

Black-and-white photo of men, horses and a cart inside of a barn-like structure

Ash dumping house, 2nd floor, 15th and Wood St.

Black-and-white image shows a trolley car emerging from a building with men standing alongside

Ash car 2618, later P-9 and W-29, PRT, 1908, Curtis C-1112 trucks