| Leons homepage 1930-1940 | An excellent source of pictures from almost every BSA brochure of the thirties |
| BSA
WM20 Website
& BSA War Department M20 |
Between these two sites you should be able to find everything you always wanted to know about the wartime workhorse ,,,, but were afraid to ask |
| The Veteran BSA pages | Dedicated mainly to bikes earlier than 1930 |
| BSA Owners club UK | Sources and dating , transfers etc. |
| Ned's 1939 M21 | M21 down under |
| Veteran Bazar & Muzeum | Lots of Prewar bikes for sale here , they come and go but likely a couple of BSA's |
| Oldtimer Picture Gallery - BSA | Some picture's of various models here , this site contains picture's of all types of vintage motor vehicals |
| ELK Engineering | Girder fork specialist's |
| British Wiring | This company has cloth covered electrical wire of many different colour's , tracers and guages , as well as connectors etc. |
| "BikeSheds" Veterans | Lots of early bikes to be found here including a little BSA beauty born in 1913 |