Here’s a drawing that we dug up at the Library of Congress showing Camp Belger during the Civil War, in 1862.

Camp Belger, Baltimore, M’d. : 114th Regt. New York S. Volunteers–Col. Elisha B. Smith, Lieut. Col. Sam. R. Per Lee, Major Henry B. Morse.
Source: Library of Congress

The 150th New York Infantry at Camp Belger, with commentary on the placement of companies and officers
by 2nd Lieut. (later 1st Lieut.) David B. Sleight, Company I (written Dec. 24, 1862)