Little Willie - BRITISH TANK
https://www.britannica.com/technology/Little-Willie

Little Willie, the world's first tank
http://www.bbc.co.uk/ahistoryoftheworld/objects/kTH6LIqHT1q6ND1OQJdBtA

'Little Willie' tank marks centenary
https://www.bbc.com/news/uk-england-dorset-34195396

First tank produced
https://www.history.com/this-day-in-history/first-tank-produced

Allied Tank Development
https://cs.stanford.edu/people/eroberts/courses/ww2/projects/fighting-vehicles/allied-tanks.htm

LITTLE WILLIE (E1949.322)
https://www.tankmuseum.org/museum-online/vehicles/object-e1949-322