Photographic slide of Joann Osterud (right) and Dorothy Stenzel (left) at an air show in North Bend, Oregon, July 16, 1989.
Inscription on slide: "N. Bend Or Air Show. Dorothy Stenzel and Joann Osterud. 2. 7/16. FE-2, 500, L37."
Photographic slide of Joann Osterud performing a tail slide stunt in a Sorrell SNS-7 Hiperbipe aircraft during the North Bend Air Show, Oregon, July 15, 1989.
Inscription on slide: "N. Bend Or Air Show. Joann Osterud. Hiperbipe. FE, 300 EDIF. Tail…
Photographic slide of Joann Osterud performing a tail slide stunt in a Sorrell SNS-7 Hiperbipe aircraft during the North Bend Air Show, Oregon, July 15, 1989.
Inscription on slide: "N. Bend Or Air Show. Joann Osterud. Hiperbipe. FE, 300 EDIF. Tail…
Photographic slide of Joann Osterud performing a four-point roll stunt in a Sorrell SNS-7 Hiperbipe aircraft during the North Bend Air Show, Oregon, July 15, 1989.
Inscription on slide: "N. Bend Or Air Show. Joann Osterud. Hiperbipe. FE, 300 EDIF.…
Photographic slide of Joann Osterud performing a stunt with colored smoke in a Sorrell SNS-7 Hiperbipe aircraft during the North Bend Air Show, Oregon, July 15, 1989.
Inscription on slide: "N. Bend Or Air Show. Joann Osterud. Hiperbipe. FE, 300 EDIF.…