American Architect and Builders' Guide published a hand-colored sketch on June 26, 1886.
American Architect and Builders' Guide
Marquand, Henry Gurdon (1819-1902)--Auction catalog
Daytonian in Manhattan-- http://daytoninmanhattan.blogspot.com/2012/12/the-lost-henry-marquand-mansion-madison.html
Henry Marquand Mansion -- Madison Ave and 68th St.
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