- 1947 Douglas T35S - National
- Douglas - Vehicles
- 1929 350
- - Wikipedia
- Mark III Wikipedia
- Type +90, 1950. Både og Dele - - Auctionet
- Douglas Mk IV – We Classic
- – 1930s – The London Douglas Motor Cycle Club
- Douglas Mark IV Sports — 1950 on Bilweb Auctions
- Lot 163 - 1934 Z1 Powerflow 750cc
- – 1930s – The London Douglas Motor Cycle Club
- Bonhams : Douglas 500cc no. AA189 Engine no. S/J186
- 1913 Model R 350cc 2 cyl sv 2603 - Yesterdays
- Motorcycles
- 1912 'Douglas' Motorcycle | Motorcycle, Vintage motorcycles, Cafe racer
- Douglas Model R National Museum
- Post-War – The London Douglas Motor Club
- DOUGLAS - Bike Rider
- 1927 Douglas | Classic motorcycles, Motorcycle, motorcycles
- – 1930s – The London Douglas Motor Cycle Club
- - Wikipedia