Source: Undated photograph titled "Members of W. H. Markham & Co. Staff Who Served in World War--1917-1918." Photograph taken by the Gerhard Sisters. Location: Groups Collection, Box 1591, Photographs and Prints Department
Last Name:	Allen
First Name:	Sidney
Middle Name:	T.
Photograph:	yes
Rank:	Lieutenant
Remarks:	15th Field Artillery