Children sitting in pits of the Willamette Meteorite, Hayden Planetarium, 1939 

The Zeiss Projector in the Hayden Planetarium, showing coordinates along part of the ecliptic and altitudes on meridian, 1939 

United States Naval Academy Midshipmen from Annapolis outside the Hayden Planetarium, June 1936 

Hayden Planetarium, exterior, 1936 

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

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

Replica of telescope made by Galileo, Hayden Planetarium, August 1936 

Mr. Fred Raiser, technician, and Professor William H. Barton with Cosmic Ray Counter machine, Hayden Planetarium, 1939 

Planetarium chamber showing skyline and seating, Hayden Planetarium, November, 1936 

Analemma Showing Declination of the Sun, or Table of Time, September, 1936 

Assembly of the curved stainless steel plates of the hemispherical projection dome, Hayden Planetarium 

Visitor at Cosmic Ray Counter machine, Hayden Planetarium, 1939 

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

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

Children viewing the Zeiss Projector, Hayden Planetarium 

President F. Trubee Davison, Prince Chichibu, brother of the Emperor of Japan, Clyde Fisher, Head of the Hayden Planetarium and Roy Chapman Andrews, Director of the Hayden Planetarium, Hayden Planetar 

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

The Zeiss Projector, Hayden Planetarium 

Lecture in dome, Hayden Planetarium, 1941 

Ernest Deike with his miniature Projection Planetarium, 1939