RCA TRK-12 Phantom Teleceiver 1939 (U.S.A.) To prove to skeptical New York World's Fair visitors that no trickery was involved in creating television images, a special order was made to RCA's engineering wing to build a transparent version of Vassos' TRK-12 cabinet. The cabinet was constructed from DuPont's new Lucite plastic, giving viewers a clear picture of the set's inner workings. This stunning showpiece became the set most often associated with the beginning of the North American television age. It was first displayed in the lobby of the RCA Pavillion at the 1939 New York World's Fair, where it was highlighted by a futuristic wall mural (designed by Stuart Davis) and illuminated by natural light emanating from a spectacular glass curtain wall. The set proved to be a crowd-pleaser and was dubbed the "Phantom Teleceiver" by the press. The use of Lucite at the Fair wasn't exclusive to RCA: General Motors featured a transparent car and Lucite was used in a series of fountains and goldfish aquariums dotted throughout the fairgrounds.