The American Optical 1955 Scientific Instruments Catalog (aka 'The Red Book')
The Red Book is the dealer's catalog in the mid-1950's just as The Blue Book is the dealer's catalog for the mid to late 1940's. Dave Jackson contributed his copy for me to scan and present here. (Note: An earlier version of The Red Book (ca 1950) is available here).
Below: The contents page (just click on the thumbnail below for the larger image) provides a description of the contents of the sections:
Here are the zip files for those sections (note, this is an ongoing effort and sections will be continually added as fast as I can find time to scan):
And finally, separate images for the index in case that is more convenient than working with the zipped index just above (i.e. last entry in the sections table) -- just click on each for a larger image: