Oral history interview with Ron E. Henderson conducted by Curtis Johnson on October 27, 1980, as part of the Drive-in Restaurants of Portland Oral History Project. Henderson was a frequent patron of drive-in restaurants in Portland, Oregon, in the late 1960s.

Oral history interview with Donald P. Krueger conducted by Curtis Johnson on November 13, 1980, as part of the Drive-in Restaurants of Portland Oral History Project. Krueger was a frequent patron of drive-in restaurants in Portland, Oregon, in the mid-1950s.

Oral history interview with Sherman G. Marriott conducted by Curtis Johnson on November 17, 1980, as part of the Drive-in Restaurants of Portland Oral History Project. Marriott opened the Tik Tok Drive In in Portland, Oregon, in 1936.