The Douglas Bulldog, ready for immediate delivery, possesses all the outstanding features of the Douglas 350 c.c. model, the famous Douglas flat-twin engine, and all the electrical and other accessories required by the most exacting motor-cyclist. It has in addition the extra 150 c.c. capacity which gives the 'Bulldog' its superior ' pep.' For easy-starting, smooth running and reliability, you will find it impossible to beat this light 500c.c. side valve model at £40, "all-on" including fall electrical equipment.

The Motor Cycle, July 21st 1932

History of Douglas Motorcycles