Yes. You can purchase one from your local friendly Harley-Davidson dealer. Part# 99414-93 It is likely that he will not have it in stock, but can get it in a few days. MSRP about $40. It contains a 1952, 1954, and 1957 Riders Handbook for K and Sportster. 1957 Sportster Parts Catalog. 1957 45" Rider's Handbook. 1957 Big Twin Riders Handbook. 1957 45/61/74 Parts catalog.
There is no service manual, because Harley did not produce any service manuals from 1950 to 1958.
Read here The 1959 Sportster Service Manual was the first one for the Ks or Sportsters. The 1959-1969 Service Manual, readily available on eBay, is the Service Manual to get. It's got everything in the 1959 Manual, plus all the changes through 1969.
If you're working on a K-model, you still need the two books above. Check out the Parts Manuals and Shop Dopes in our
Literature section. Lots of important information on K-model engine specs in there.
While you're at the Harley dealer, order a Part# 99403-93 The Legend Begins. $45 I've used mine so many times over the years that the binding is falling apart, and I'm gonna have to order a new copy one of these days.
What else can you get from your Harley dealer?
Look here