For more information on theatrical clubs, charitable organizations, unions, and related performing arts research sources:
The Lambs: www.the-lambs.org
The Masquers: www.masquersclub.org
The Players: www.theplayersnyc.org
Academy of Motion Picture Arts and Sciences Academy Film Archive: http://www.oscars.org/filmarchive/index.html
Academy of Motion Picture Arts and Sciences Margaret Herrick Library: http://www.oscars.org/library
Actors’ Equity Association: www.actorsequity.org/AboutEquity/timeline/timeline_intro.html and www.actorsequity.org/aboutequity/historicaloverview.asp
The Actors Fund: www.actorsfund.org/about
American Federation of Television and Radio Artists (AFTRA):www.aftra.org/aftra/history.htm
American Film Institute/Louis B. Mayer Library: http://www.afi.com/about/library.aspx
The George Meany Memorial Archives: www.georgemeany.org/archives/home.html
Library of Congress (Performing Arts Reading Room): www.loc.gov/rr/perform
Motion Picture & Television Fund history: http://www.mptvfund.org/cm/about-us/mptf-missionhi...
New York Public Library for the Performing Arts: www.nypl.org/research/lpa/the/the.html
New York University/Robert F. Wagner Labor Archives: http://www.nyu.edu/library/bobst/research/tam/wagner/index.html
Paley Center for Media (formerly the Museum of Television and Radio): www.mtr.org
UCLA Film and Television Archives: www.cinema.ucla.edu/about/aboutus.html
University of Southern California—Cinematic Arts Library: http://www.usc.edu/libraries/locations/cinema_tv/
Wisconsin Center for Film and Theatre Research: http://www.wcftr.commarts.wisc.edu