When Morgan Earp was killed in 1882,
many believed that Spence was the killer. After the Earps had left Arizona,
Spence served as a lawman on several occasions. He was known to have killed
at least four men. For one of the killings he was sentenced to five years
in Yuma Prison, with the sentence to begin June 10, 1893. When he entered
Yuma Prison, the "scary looking" photo to the left was taken
and he gave his occupation as "teamster" listing his nearest
relative, Mollie E. Spencer of Los Angeles, California.