\[Prospect Park Station, BMT Broadway Line, Brooklyn, NY] Prospect Park Station, BMT Broadway Line, Brooklyn, NY. View along an open-cut of the Prospect Park station platform, construction workers and a work car on the tracks. Signs along the tracks for the B'WAY SUBWAY & M.B. CAR ADV. \[?] CO., INC. Also showing trolley station and tracks running above the subway tracks, with trolley #4158 in view. Caption at lower left of print: (8) M4. PROSPECT PK STA. 6-29-1916