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 

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

Hayden Planetarium, exterior, 1936 

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

Children viewing the Zeiss Projector, Hayden Planetarium 

Prize winning poster, Hayden Planetarium, 1939 

Prize winning poster, Hayden Planetarium, 1939 

A.E. Snyder, General Manager of Westinghouse Electric and Manufacturing Co. and Professor William Barton at the presentation of the Time Capsule Replica to the Planetarium, June 17, 1941 

Ernest Deike with his miniature Projection Planetarium, 1939 

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

William H. Barton, Jr., Hans C. Adamson, Wayne M. Faunce, and Charles H. Coles with Longines Eclipse Expedition equipment, Hayden Planetarium, 1940 

Ernest Deike with his miniature Planetarium Projection Instrument, 1939 

Ahnighito section of the Cape York meteorite in the first floor corridor, Hayden Planetarium, June, 1936 

Ahnighito section of the the Cape York meteorite in the first floor corridor, Hayden Planetarium, June, 1936 

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

William H. Barton and giant sextant, Hayden Planetarium, June 24, 1942 

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

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