Shamed by the orphanage arson & other draft riot outrages, Governor Seymour withdrew his opposition to formation of an U.S. Colored Troops regiment from NY that the Union League Club had been seeking to establish. On 3/5/1864, the first such NY regiment, trained on Rikers Island, marched, in full uniform and with rifles, to cheers of crowds from E. 26th St. dock to Union Square.
The Gov. Seymour image is based on a larger Wikimedia Commons image at
http://commons.wikimedia.org/wiki/Image:Horatio_Seymour.jpg
The Union League image is based on the banner images appearing on the home page of the Union League Club of New York at
http://www.unionleagueclub.org/Default.aspx?bhcp=1
The image of the 20th Reg. USCT parade 3/5/1864 is based on Frank Leslie's Illustrated Newspaper, March 26, 1864 sketch that appears on various web sites, including
the American Antiquarian Society's Northern Visions Of Race, Region, & Reform site
http://mac110.assumption.edu/aas/Intros/soldiers.html