Advertisement for an airship height indicator tool created by John Sylvester Wheelwright, circa 1910s-1920s.Part of a photograph album related to John Sylvester Wheelwright's service with the Royal Naval Air Service, circa 1907-1943.
Informational sheet for the Lear Vapordyne Indy race car, circa 1969-1971. Contains drawings, photographs, and information related to the Vapordyne's development.