Stereoview on buff mount with Gardner's copyright printed to lower recto. Verso bears affixed paper label for Brady's Album Gallery, with image number, title, and caption: "No. 605. / Group of President Lincoln, Gen. McClellan, and Suite, / At Headquarters Army of Potomac, previous to reviewing the troops and the Battle-Field of Antietam, 3d Oct., 1862."

Ostendorf identifies this stereo photograph [O-65] as "The only stereo card published during Lincoln's lifetime (1862) which was actually taken with a stereoscopic camera." Gardner took another stereo photograph on the same day, showing Lincoln and McClellan sitting in the tent, but it would not be published as a stereo card until after the war as part of the series "Photographic War History, 1861-1865."

Ostendorf identifies subjects from left to right as such: Buck Juit (soldier); Lamon; Ozias M. Hatch; Marcy; Reeves; General McClernand; President Lincoln; General Fitz-John Porter; General McClellan; Joseph Camp Griffith Kennedy; Garrett; Mather.