From Maryland in the World War 1917-1919 Military and Naval Service Records In Two Volumes and Case of Maps Volume II:

Name: Harry Joseph Selby
Star: died in World War service under honorable conditions.
Race: white
Address: Ivory, Howard Co.
Birth Place: Ivory, Md.
Birth Date: 15 Dec 1894
Comment: RA 2 lt Inf; 1 lt Inf 6/2/17; capt Inf 4/24/18, Co L 18 Inf; School of Instr 1 Div 9/2/17; 1 Corps School 10/15/17; Co I 18 Inf 5/11/18; Patient at Hosp 7/19/18; Co I 18 Inf 8/25/18, Overseas 6/14/17 to death, Cantigny Sector; Montdidier-Noyon; Cantigny Sector; Aisne-Marne; Ansauville Sector; St Mihiel; Meuse-Argonne, Wounded severely 7/19/18, Killed in action 10/10/18, Distinguished Service Cross Near Exermont, France, Oct. 4, 1918. Captain Selby led his battalion in the attack through heavy artillery and machine-gun fire until killed by a machine-gun bullet. On one occasion he opened fire upon an enemy machine-gun nest with his pistol, thus drawi;g its fire while others made a successful flank attack, 1 Div Citation for Gallantry in Action No specific citation, French Croix de Guerre (Palm) Displayed great bravery and coolness at the head of a battalion which he brilliantly led to the attack on October 4, 1918. During the succeeding days he exerted himself to the utmost, encouraging his men by his imperturbable calm under enemy artillery and machinegun fire. Was mortally wounded October 9, 1918