Outlaw and murderer. Alvin (sometimes spelled Alvan in New Mexico records) Potter was known as Pack Saddle Jack because he used a pack saddle instead of a regular saddle for his horse. As a small time thief, he would hide stolen goods under the pack saddle and sit on top to deter anyone from suspecting him of theft. He was jailed in Delta, Colorado in 1907 for domestic violence against his wife while they lived near Cedaredge. While he was in Cedaredge, he came under suspicion for being a participant in the holdup of a Denver and Rio Grande train near Parachute, Colorado on July 7, 1904. The train robbery was similar to the ones Butch Cassidy and his Wild Bunch committed in the 1890s. The bandits dynamited the express car, but the safe contained nothing of value. A posse tracked them down near Glenwood Springs and a gun battle ensued, during which one robber was wounded and two others managed to escape. The wounded man, later determined to be Harvey Logan aka Kid Curry, the "mad dog" of Butch Cassidy's gang, killed himself rather than be captured. Pack Saddle Jack was believed to be one of the two robbers who escaped. In March 1907, famed lawman Cyrus Wells "Doc" Shores, former Gunnison County Sheriff and deputy U.S. marshal, now working as a railroad detective, came to Cedaredge seeking information on Potter. His investigation led to Potter's arrest and trial for the train robbery in Glenwood Springs. Despite testimony from several people that Potter had confided to them that he participated in the robbery, perjured testimony from several of Potter's pals that he was with them in Cedaredge the day of the holdup led to his acquittal in June 1907. Following the trial, Potter moved his wife and four children to Taos, New Mexico. On March 26, 1909, following a brawl between Potter and two other men in Robert Pooler's saloon, Potter returned to the saloon with a rifle and fired through a window, hitting Pooler and killing him. Potter was indicted and convicted of 2nd degree murder. He was sentenced to 99 years in prison. According to Doc Shores, who later visited Potter in prison, Pack Saddle Jack had gone insane from incarceration. However, based on good behavior as a trustee, he was pardoned by the New Mexico governor on 31 Dec 1923. He was then released and disappeared from history.