Most likely a Brady image from one of the series.
CDV – James O. Johnston, 8th New York Infantry. Probably a Brady image. Captain Johnston standing in from of his tent’s entrance; ID’d trunk beside him. No back mark; penciled wartime history in pencil on reverse.
Very good condition, with rounded corners, some staining, and missing printed info that most likely had the name of this series.
Michael McAfee Collecion.