Photograph of a LearAvia Bell 47 helicopter lifting an oil drum, circa 1974. Inscription on slide mount: "Demo (2)."Stamped on slide mount: "Dec 74 P2."
Photograph of a LearAvia Bell 47 helicopter (N8406E) parked at an airfield, circa 1974. The inscription on the slide mount points out the installed muffler.Inscription on slide mount: "Muffler in place."Typed on slide mount: "Seal edge with warm…
Photograph of employees working in the Avionics Shop at a LearAvia facility, circa 1972-1974. The woman in the foreground is using a soldering tool.Inscription on slide mount: "Avionics."Typed on slide mount: "Seal edge with warm iron. / Do not touch…