Mass Meeting, Union Square, 1868.
(NYPL Digital Collections)
Attribution:
Loring, Guy / Museum of the City of New York. 2001.10.9. https://collections.mcny.org/Collection/Cattle%20Show%20of%20the%20American%20Institute%20at%20Madison%20Cottage.%20Oct.%201850.-2F3XC58Q81QK.html