1. Appleton’s Dictionary of Greater New York And Its Neighborhood (1905):

    Mount Morris Park (Marcus Garvey Park)

    Is a public park of about 20 acres on the line of 5th Ave. between 120th and 124th Streets. In the center rises a hill of rocks to the height of 100 ft. and to avoid the labor and expense of blasting this, 5th Ave. has been allowed to be broken here after preserving a perfectly uninterrupted straight line for nearly 6 miles from its starting point at Washington Square. The hill is crowned with an old wooden tower 50 ft. high, containing a bell. Band concerts are given on Tuesday evenings in summer.  

    map: Insurance maps of New York, Manhattan (1912)

    image: East lawn, Mount Morris Park, N.Y. City (n.d.)