The '7th New York State Militia, Camp Cameron, D.C., 1861' refers to a specific military unit during the U.S. Civil War. Established in 1861, this militia was part of the Northern forces, also known as the Union Army. The '7th New York State Militia' was stationed at Camp Cameron, which was located in Washington D.C., playing a role in the overall defense of the capital during the early stages of the civil war. The image depicted in this title is likely a photograph or illustration related to this unit or camp.