TY - CHAP DB - Science History Institute DP - Science History Institute M2 - Courtesy of Science History Institute. Rights: Public Domain Mark 1.0 TI - A Group of Officers at Headquarters, Baltimore T2 - The Edgewood Arsenal ID - 2j62s5398 DA - 1919/03// YR - 1919 UR - https://digital.sciencehistory.org/works/2j62s5398 KW - World War (1914-1918) KW - Maryland--Edgewood (Harford County) KW - Edgewood Arsenal (Md.) KW - United States. Army. Chemical Warfare Service KW - Armies--Officers KW - Chemical warfare LA - ER -