Canal of Mars, model made by Walter Favreau for the motion picture, Mysterious Mars 

Oasis of the Canals on Mars, model made by Walter Favreau for the motion picture, Mysterious Mars 

Mysterious Mars show, Man from Mars, by Walter Favreau, peering around Mars model, Hayden Planetarium, 1941 

Man from Mars, made by Walter Favreau, for Mysterious Mars show, Hayden Planetarium, 1941 

Walter Joyce, foreman and plumber 

Walter Joyce, foreman and plumber 

Walter Joyce, foreman and plumber 

Walter Joyce, foreman and plumber 

Walter Favreau, Charles Coles, and William Barton, filming The Surface of Mars, September, 1941 

Herman O. Mueller, glass modeler, shaping glass over a Bunsen Burner 

Ludwig Ferraglio making a cast of Acrotus willoughbyi 

Model of the Ptolemaic theory of the solar system, constructed by Walter Favreau, Hayden Planetarium, 1943 

Charles Russell, Curator, Department of Education 

Walter Favreau building a model of Ptolemaic theory of the solar system, Hayden Planetarium, 1943 

Ernest Deike and Professor William Barton on the Planetarium roof adjusting a coelostat to bring sunlight into the Planetarium, light is directed into objective lens to the left of Deike's head, June 

Professor William H. Barton at the Control Panel in the Hayden Planetarium, November 1937 

Electron telescope and viewing screen used for Mysterious Mars show, Hayden Planetarium, 1941 

Professor William H. Barton at the control panel, Hayden Planetarium, November 1937 

Museum President Frederick Trubee Davison seated at his desk in his office, 1937 

Electron telescope and projector used in Mysterious Mars show, Hayden Planetarium, 1941