Technical Library
- R51/3 parts manual (German language) (published 1952) (4.2 MB)
- R51/3 Parts manual (German language) (published 1956) (40.8 MB)
- R51/3 Workshop Manual (German language) (published 1951) (11.7 MB)
- R51/3 Workshop Manual (English language) (published 1952) (27.8 MB)
- R51/3 Workshop Manual (German language) (published 1953) (30.8 MB)