Visitor at Cosmic Ray Counter machine, Hayden Planetarium, 1939 

Children viewing the Zeiss Projector, Hayden Planetarium 

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 

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

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 

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

Visitors looking at transparency, Hayden Planetarium, August 1936 

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

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

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

Prize winning poster, Hayden Planetarium, 1939 

Prize winning poster, Hayden Planetarium, 1939 

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

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

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

Children sitting in the pits of the Willamette Meteorite, 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 

Hayden Planetarium exterior, American Museum of Natural History, May, 1936