Back Row (left to right) - John Gillespie RHP, Joe Deviine MGR, Billy Hamilton SS, Carl Manda 3B, Pat Kilhullen C, Monroe Swartz RHP, Joe Sullivan C, Hal Nelson OF.
Front row - Karl Schnell RHP, John Mooney OF, Ernie Thollander RHP, Clyde Anhier 1B, Bernie DeViveiros 2B, Charlie Swaney/Sweeney LHP, Bill Griffith OF. Batboy (not known).
(Looks to me like they've pasted some cutout heads on some of the bodies, especially in the front row!)
Image from the Spalding Base Ball Guides collection, The Library of Congress
Standing (left to right) - Billy Hamilton SS, Clyde Anhier 1B, Monroe Swartz P, Karl Schnell P, Carl Manda 3B, John Gillespie P, Joe Devine MGR, Bernie DeViveiros 2B.
Front, kneeling - Pat Kilhullen C, Eddie Menser CF, Joe Sullivan C, Jack Mooney LF, Charles Swaney P, Billy Griffith RF.
[Image from the Winnipeg Tribune, September 10, 1921]