Vintage Camera Manuals Lot of 4

This bundle includes a group of 4 vintage camera manuals. I guess I sold the cameras and forgot to include the books. First is a soft cover pamphlet called "Rolleiflex in Practical Use". Then there is a hard cover small book called "Rollei Handbook". This one is by Alec Pearlman. Then another pamphlet called "Rolleiflex the Practical Accessories" and last is a "Brownie Twin 20 Camera Manual". Condition is as pictured. I have shown the content page for the hard cover and the page that shows that it came out in 1954. The Rollei Handbook measures approx. 6 inches by 4.5 inches high by .75 thick. A very nice book covering how to use the Rollei with many Black and White photos for very clear explanations of operation and of photographic principles and techniques. 169 pages plus a few pages of advertising at the end. Neat book !