Here is the contact information for the author:
D. Karl Malkames
Karl Malkames, Inc.
1 Sherwood Pl.
Scarsdale, NY 10583-2704
United States
Phone: 914-723-8853
http://www.smpte.org/smpte_store/journals/
Also check out the SMPTE Motion-Picture Projection and Theatre Presentation Manual, published in 1969, which has many photos and illustrations of 1950's and 1960's theatre technology. The Library of Congress catalog card number is 78-95387.
Back issues of Boxoffice Magazine, International Film Journal, and International Projectionist also would document the evolution of projection technology.
You may want to contact the projectionist's union (IATSE in North America) to see what historical material they may share, and perhaps interview projectionists:
http://www.iatse.lm.com/
Here is the history of the IATSE:
http://www.iatse.lm.com/100yrs.html
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John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Eastman Kodak Company
Research Labs, Building 69, Room 7419
Rochester, New York, 14650-1922 USA
Tel: 716-477-5325 Cell: 716-781-4036 Fax: 716-722-7243
E-Mail: john.pytlak@kodak.com
Web site: http://www.kodak.com/go/motion
There are several organizations that you might contact and receive information from:
The Film Journal which has been publishing a magazine since the 1940's on the theatre exhibition industry. It was founded by Mort Sunshine and is presently being run by his son Bob and located in New York City. 212 246 6460 They are the Sunshine Group Worldwide
In addition to publishing the Film Journal Bob is also a Director of Variety Clubs and executive Director of the Motion Picture Pioneers.
There is Box Office Magazine that has been around since the 50's and are located in Chicago and Pasadena, Ca. Speak with Kim Williamson @ 626 396 0250
There was a third industry Magazine called the Motion Picture Exhibitor that was published in Philadelphia during the 30' through 1974. The publisher was Jay Emmanual The Magazine ceased upon his passing. There may be records in Philadelphia, it was an excellent magazine.
The main branch of the New York Public Library will have copies of the Motion Picture Projection and Theatre Presentation Manual by Don V. Kloepfel Library of Congress Cat. No. 78-95387
Movie Palaces by Ave Pildas ISBN 0-517-53857-1 contains great photos and stories.
The Museum of the Moving Image in Queens NY. Speak with Richard Aidella Chief Projectionist He is a wealth of information. 
Widescreen Cinema (Harvard Film Studies)by John Belton. Harvard Univ Pr; ISBN: 0674952618
It's still in print and avalible on Amazon.
It covers most film formats their technical aspects and social reasons for their implimentation and retirment.
------------------
John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Eastman Kodak Company
Research Labs, Building 69, Room 7419
Rochester, New York, 14650-1922 USA
Tel: 716-477-5325 Cell: 716-781-4036 Fax: 716-722-7243
E-Mail: john.pytlak@kodak.com
Web site: http://www.kodak.com/go/motion
Terry Ramsaye wrote a book in 1926 called "A Million And One Nights" that tells the story of film projection from the 1890's to 1925. Great reading.
I am reading it at work while my machines are doing their thing.
It was re-issued in 1986 in a paperback edition by Touchstone Books.
A note to our fellow Film-Techers, I've been on-hand for two of the filmed interviews that Gabe did with projectionists recently in Maryland and I think that his documentary project shows real (or maybe that should be REEL
) promise. I'm really looking forward to seeing the final product. Finally, someone who understands us!