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.…
Photographic slide of Joann Osterud (right) and Dorothy Stenzel (left) waving to the crowd at an air show in North Bend, Oregon, July 16, 1989.
Inscription on slide: "N. Bend Or Air Show. Dorothy Stenzel and Joann Osterud. 1. 7/16. FE-2, 500, L37."
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."