Other Perkin-Elmer Cameras
Go to https://www.youtube.com/watch?v=MGdxpqqsHl8 online and you will hear a good and funny talk by Frank Murray, a former SR-71 and A-12 pilot who talks about his career including discussions of former Perkin-Elmer cameras that were on various reconnaissance planes that he flew. I got this site and interesting Youtube video from Jon Aspinwall.