At least one of the Atlas catalog covers, No. 26, was drawn by the eccentric gentleman artist Arthur C. Radebaugh, a man whose advertising work was also commissioned by Coca-Cola, Dodge and Chrysler. From the late 1930s until the 1960s he was known for his futuristic, air-brush illustrations in, amongst other publications, Motor, Fortune and the Saturday Evening Post. In addition, he also had a weekly syndicated cartoon strip "Closer Than We Think", a humorous send-up of technology and invention. Eventually forgotten (and for many years his type of work derided) his reputation was revived as the significance of his contribution to graphic illustration was realised in the closing years of the 20th century. A video of his work is here and examples of his art here and here.
Atlas catalogs were, until the late 1930s, always of an interesting design with artistic covers, a wealth of detailed information, profusely illustrated and with a simple chronological numbering system. Most were titled "Atlas Equipment" or "Atlas Modern Shop Equipment" the known exceptions being  No. 31 "Atlas Lathes" and No. 30 "The New Atlas Shaper". The catalogs continued to be published during the Second World War, but only in limited numbers - with separate editions for drills, shapers, millers and lathes also issued. Although I believe that all editions of the catalogs have been found, though should any reader know otherwise, the writer would be pleased to proved wrong.
This page shows covers from the early 1930s through the unfortunately long-lasting and ubiquitous "green" editions of 1950s, to the final publications of the 1960 and 1970s.
If you have cover pictures from different catalogs that you would like to contribute, please do get in touch.
Two of the more colourful catalog covers below can be download and printed out at around 12" x 16" - an ideal size to frame and hang on your study or living-room wall (good luck with the latter….)