There's 3 pages in the 1957 Focal Press edition of "Cameras". Top standard lens was an f2 50mm Xenon (Schneider), other lenses were from leading manufacturers.
There were quite a few short lived camera manufacturers in Europe after WWII and the Rectaflex is from one of them, they were all hit very hard by the very rapid expansion of the Japanese camera manufacturers in the late 1950's. There's no Japanese cameras in the 1957 book by 1963 most of the major Japanese companies are included.
There's some superb European cameras made in the period after WWII up to about 1960, many quite innovative like the Praktina with it's motor drive and bulk film back. It's worth reading HS Newcombe's book 35mm Technique, my copy's from 1953. Newcombe owned a large UK camera shop and wrote from practical experience in magazines as well as authoring some books.
I made a decision some years ago not to collect 35mm cameras, but often feel very tempted especially when I see some of those post War cameras
Ian