Riverside Park in 1910, when it first opened. Photographer unknown; found at Shorpy.com. Click the image to to see the large original at Shorpy.

This photo shows Riverside Drive and Riverside Park ftom 110th Street to Grant's Tomb at 123rd Street. Some interesting items: The Columbia University pier at 113th Street, sticking out into the water; the 125th Street pier that offered ferry service to New Jersey, the battleships sailing up the river; billboards on 110th Street. Missing features include the George Washington Bridge and Riverside Church, which did not exist in 1910.