[William P. Lear and Board of Directors with prototype steam engine]

Photograph of William P. Lear (second from left) and members of the Lear Motors Corporation Board of Directors with a prototype steam engine, circa 1970s.

Typed caption on verso: "William P. Lear and the Board of Directors of Lear Motors Corporation inspect a prototype Delta engine following a successful dynamometer run. Lear Motors is applying space-age technology to the old science of steam engineering to produce modern vapor cycle systems. They are designed to replace internal combustion engines in automobiles, trucks, buses, boats, aircraft, industrial equipment, and stationary power sources."