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		More big 4 pictures can be found on the Welbike website of Lex Schmidt On the site, click motorbikes and Norton Big4 combination. To return to this site from there, click return(s) on the browser.

The photographs are not distributed for commercial purposes, only for historic reference. I will not be held responsible for any other/commercial use of these pictures. I do not intentionally want to infringe on anybodies copyright. 
Anybody who opposes (a) specific photograph (s) used, can inform me. I will remove the photograph when legally required.
When the source is known, it is mentioned through the codes which can be found on the references page.