Oral history interview with Elston L. Ireland conducted by Curtis Johnson on November 21, 1980, as part of the Drive-in Restaurants of Portland Oral History Project. Ireland was a restaurateur affiliated with a total of 14 restaurants in Portland, Oregon, and Seattle, Washington, over the course of his career, including Ireland's Restaurant in Portland.

Oral history interview with Steven P. Yaw conducted by Curtis Johnson on November 12, 1980, as part of the Drive-in Restaurants of Portland Oral History Project. Yaw was the grandson of W.P. Yaw, the founder of Yaw's Top Notch, and ran the restaurant until its closure in 1985.