1912:
British Monogram Oil Company Ltd
Monogram Motor Cycle Oil
Rec. Num. 1 of 2
Source: The Motor Cycle August 29th 1912
1912:
British Monogram Oil Company Ltd
Monogram Motorcycle Oil 1912 Advert
Rec. Num. 2 of 2
Source: The Motor Cycle October 3rd 1912