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 

Professor William H. Barton at the control panel in the Hayden Planetarium 

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

Hayden Planetarium, exterior, 1936 

Children viewing the Zeiss Projector, Hayden Planetarium 

Visitor at Cosmic Ray Counter machine, Hayden Planetarium, 1939 

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 

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

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

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 

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

Visitors looking at transparency, Hayden Planetarium, August 1936 

Willamette meteorite in the first floor corridor, Hayden Planetarium, 1936 

Willamette meteorite in the first floor corridor, Hayden Planetarium, 1936 

Construction of the Hayden Planetarium, November 7, 1934 

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 

Construction of the Hayden Planetarium, November 20, 1934 

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

Longitudinal Section of the Hayden Planetarium, drawing by T.W. Voter, 1936