Gus Rowe, engineer on the 474, had a seniority date of 11-26-1908. He was hired as an engineer off the Florence & Cripple Creek. He had no fireman seniority on the Rio Grande *CRRM records.) That is was a on the F&CC came from a Tiv Wilkins book.
Henry Willis, conductor on the 426 had a seniority date of 8-11-1890 as a brakeman and 10-20-1897 as conductor. He later would be the condcutor on the last run of the Chilli Line eight years later.
Stamey Edmiston, who was probably the Pagosa Springs branch conductor, had a seniority date of 11-12-1898 as brakeman, 12-2-1904 as conductor. He was the conductor on the last train 215, the wesbound San Juan. That train was numbered 115 in 1933.
When I was at the museum I to copy these dates last year I failed to get Oscar Caldwell's date but since his number is higher than Gus Rowe's his date would have to be after Rowe's. Caldwell held the Alamosa-LaVeta passenger train before retirment in the 1950s.
Also relying on memory, Claude Allbee was hired somewhere around 1904.