TR's sons' regiments during war, 1917-1918 
Theodore Roosevelt's sons' regiments during war, 1917-1918 
Soldiers walk in formation on a road accompanied by several mounted men. Because of the soldiers' heavy clothing, it must be winter. This group may be the 26th Infantry, Theodore and Archibald Roosevelt's regiment. Following sequence is of biplanes flying in formation; third sequence is shot at a hangar where men appear to be preparing a plane for flight. The second and third sequences ...
Theodore Roosevelt Association Collection (Library of Congress)