From Land's End to John-O'-Groats: Being an Account of His Record Walk, in Which He Accomplished 908½ Miles in 16 Days, 21 Hours, and 33 Minutes. E-book. Formato PDF George H. Allen   -  Forgotten Books, 2017  - 

I do not suggest that feats of endurance in themselves constitute the highest form of propaganda, but they have the advantage of being very real argument for the cause. This book is sent forth at the request of several friends as a record of the greatest athletic feat of my life.