Manhattan: Central Park - Reservoirs - Lower reservoir.

(1)
Central Park; Lower Reservoir, view north from the southern part, showing the work of filling in at an early stage.
March 30, 1931.
P. L. Sperr.
(2)
The same, a slightly later stage. In both these views the Upper Reservoir can be glimpsed through the row of trees along the 86th Street cross-road (Transverse Road No. 2).
June 28, 1V31.
P. L. Sperr.