Click on image to enlarge.

Photo by Anton Van Dalen, taken in 1977.

The garden sign in 1977 (the year the garden was started) indicates that different groups and organizations were involved in the garden’s formation. The sign reads,

El Sol Brillante Community Garden on 12th Street
12th Street Tenants
Sponsored by 11th Street Movement
Assisted by Horticultural Society & Cornell

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References (potential print matter available off-line/off-site):
The Horticultural Society of New York
https://www.thehort.org/about/archives/
New-York Historical Society Museum & Library
Guide to the Horticultural Society of New York Records 1811-circa 2010 (bulk, 1900-circa 2010)
Series VI. Print Matter, 1811-circa 2010 > Subseries VI.A. Hort Periodicals, 1900-1998
Offsite-Box: 96, Volume: HSNY-44, Garden Magazine (bound), 1977 November-1978

Cornell University Cooperative Extension New York City
https://nyc.cce.cornell.edu/about/
https://rmc.library.cornell.edu/EAD/htmldocs/RMA01975.html
Cornell University Cooperative Extension records, 1915-2015.
Division of Rare and Manuscript Collections, Cornell University Library
Cornell Publications, Box 1, Folder 24, Urban Gardening Program, 1977
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