You'll Never Watch Ghostbusters the Same Way After Seeing These Rare Pictures

Fiberglass Stay Puft heads prior to foam "skin" application. Mechanism designer Lance Anderson can be seen behind.

Two Stay Puft maquettes, the left one showing his badly burned look.

Stay Puft concept art by Ron Croci.

An unused, melty-mouth Stay Puft head.

The full-size Stay Puft suit was prepped for filming as VFX director of photography Bill Neill took a light meter reading.

Inside a fireproof Stay Puft costume, a stunt performer prepared to be ignited by Joe Viskocil.

A number of Thom Enriquez designs for the Stay Puft marshmallow man that experiment with differing approaches to height, mass, and shape.

Coated in simulated marshmallow, Harold Ramis, Dan Aykroyd, and Bill Murray posed for a publicity still.

Ivan Reitman directed his actors during location shooting in New York's Central Park West.

Slimer feeds his face in a final frame from Ghostbusters.

A team of operators gave Slimer a hefty amount of personality. Steve Johnson can be seen in the background.

Stephen Dane's illustration of Ghostbusters II's Ectomobile, featuring a roof rack even more stuffed with gadgets than before.

Concept illustrations for the revised Ectomobile by Benton Jew (top) and John Bell (bottom).