Collection consists of materials that belonged to Arnold P. Hansen, a special agent at Union Station in Portland, Oregon. Materials include a photo album of suspects apprehended for crimes committed against or in relation to the Union Pacific Railroad, as well as a photocopy of a signed confession by Roy DeAutremont to the robbery of a Southern Pacific train near Jackson County, Oregon, in 1923.

Oral history interview with Adam C. Heim and Clara C. Heim conducted by Jim Strassmaier from July 26 to September 13, 1989. The Heims discuss their lives in Portland and in Huntington, Oregon.

Oral history interview with Randall B. Kester conducted by Tom B. Stoel, Jr. from April 2-14, 1992, as part of the Volunteer Attorneys series of the United States District Court Oral History Project. Kester was a lawyer, an Oregon Supreme Court justice, and general solicitor for the Union Pacific Railroad.

Oral history interview with Randall B. Kester conducted by Donna L. Sinclair from February 21 to May 11, 2005, as part of the United States District Court Oral History Project. Kester was a lawyer and served on the Oregon Supreme Court from 1957 to 1958.

Papers of and relating to James A. Larned, including correspondence and forms relating to employment; reminiscences; genealogical information; and a handwritten notebook regarding railroad policies. Larned (1877-1969) worked as a telegraph operator and later as a claims agent for the Union Pacific Railroad Company.