Hollywood's attempt at besting the small screen TV format included the much-balyhooed premier of so-called 3-D movies. The first, "Bwana Devil", hit the silver screen in late 1952.
Graphic from Wikipedia / "PhilbertGray"


The 3-D process, which gave the illusion of depth perception, was accomplished by disposable, cardboard "anaglyph glasses", which were worn by the audience.
Photo from Wikipedia / "Snaily"