This wonderful colorized photograph is a bit dark, but nonetheless worth a few moments of your time. It depicts a soldier belonging to the celebrated (or notorious) Gen. Daniel E. Sickles' Excelsior Brigade and is drawn from the website of the New York State Military Museum: http://dmna.state.ny.us/historic/mil-hist.htm
As I continue with my research for scenarios of the Peninsular Campaign of 1862, I am of course having to characterize leaders, units, and formations. With respect to New York State, I've found the site referenced above not only an excellent point of departure but also an unparalleled resource. It covers NYS units from the Revolution through the Korean War.