1922:
E.Showell & Sons Ltd
Showells Rotary Oil Pumps For Motor Cycles
Rec. Num. 1 of 2
Source: The Motor Cycle January 12th 1922
1922:
E.Showell & Sons Ltd
Showells Oil Pumps For Motor Cycles 1922
Rec. Num. 2 of 2
Source: The Motor Cycle January 26th 1922
