He made his way on foot to Fulton, Illinois, where the Chicago and North Western Railway had just been completed.
[1] Kirkman entered the service of the Chicago and North Western Railway,[2] where he got his first job as telegraph messenger.
[3] In 1889 Kirkman was elected vice president, which position he filled until 1910, when he retired on a pension after 53 years of service at the Chicago and North Western Railway.
Kirman was also founding father of the Accounting Division of the Association of American Railroads.
[1] This article incorporates public domain material from "Marshall Monroe Kirkman : Obituary" in: Auditor Report of the Railway Accounting Officers, Association of American Railroads.