This oral history interview with Mildred E. Haffey was conducted by Taylor Bailey in three sessions, from June 29 to July 27, 2016, in Portland, Oregon. The interview was conducted for the Oregon Labor Oral History Program, which collects oral histories of individuals who have advocated for working people of Oregon, including public figures, union members, and workers. Accompanying the audio recording is a color photograph, taken at the time of the interview, of Haffey and four others, three of whom are identified as Bailey, Jim Strassmaier, and Shirley Block. The fifth person in the photograph is unidentified.

In this interview, Haffey discusses her family background and early life, and talks about moving to the Pacific Northwest in 1943. She speaks about her marriage to and divorce from Donald E. Hall, and about her marriage to Vic Haffey in 1967. She discusses working as a bus driver for the David Douglas School District and for Portland Stages in Gresham. She then speaks extensively about working as a bus driver in Portland from 1967 to 1992, first for the Rose City Transportation Company in 1967, then for local transportation agency TriMet, after TriMet took over Rose City Transit's operations in 1969. She discusses the benfits she earned as a member of Amalgamated Transit Union Local 757, and describes her experience as a woman bus driver at a time when women were uncommon in the profession.