Organization Griffith Observatory

California Institute of Technology

University of California, Los Angeles

San Diego State University

University of California, Los Angeles

Committee on Scientific Investigation of Claims of the Paranormal

International Astronomical Union

Astronomical Society of the Pacific

Royal Astronomical Society

American Astronomical Society

National Aeronautics and Space Administration

RAND Corporation

United States Military Academy

Santa Monica College

Pierce College

University of California, Los Angeles

American Meteorological Society

Astronomical Society of the Pacific

Royal Astronomical Society

American Physical Society

Sigma Xi

American Astronomical Society

United States Army (WWI and WWII)