I am off tilting with the windmills again.
These cars had either "Safety Co." (Safety Car Heating & Lighting Co.?) mechanical air conditioning (steam activated?) numbers 8100-8104 & 8107-8139 or B. F Sturtevant ice air conditioning numbers 8105, 8106 & 8151-8159. Does anybody know of broadside photos of these cars that would show the under floor equipment? Most photos are taken at such an angle that under floor equipment is not clear. I was able to obtain from Bob's photo the only one he had of the class, car 8101. The madness to my method is the 1935 rebuilds of cars 7800-7950 may have copied the equipment arrangement of the 1929 built cars. The rebuilt cars had ice air conditioning and not the steam activated mechanical air conditioning. I still have not found a clear photo of the ice water circulating piping under the 7800-7950 cars. A 1932 issue of Railway Age states the steam activated systems used a large quantity of steam and reduced the performance of the steam locomotive. The system was also more expensive to install, operate and maintain. This would help explain why the rebuilt 7800-7950 cars had ice air conditioning. I am told by the Pullman Library that these were cars built to specification 678 and that the drawing lists are on file. I have not been able to obtain those lists yet, but we are working on it.
Check out this website. It has a wealth of information about Pullman cars! www.pullmanproject.com