Ernest Deike with his miniature Planetarium Projection Instrument, 1939 

Miniature Projection Planetarium made by Ernest Deike, 1939 

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

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

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

The Zeiss Projector, Hayden Planetarium 

Prize winning poster, Hayden Planetarium, 1939 

Prize winning poster, Hayden Planetarium, 1939 

Assistant Curator Marian Lockwood with group of children in the Copernican Planetarium, Hayden Planetarium, 1940 

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 

Visitor at Cosmic Ray Counter machine, Hayden Planetarium, 1939 

The Planetarium during a performance, 1942 

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

The Hayden Planetarium at night, 1936 

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

Lecture in dome, Hayden Planetarium, 1941 

The steel framework of the Planetarium, 1936 

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