These images show letters from Adidas founder Adi Dassler and Puma s Armin Dassler written to
Armin A. Dassler
Armin Dassler - Wikipedia
BBC Radio 4 - Sneakernomics - The sibling rivalry that changed sport for ever
WFSGI on Twitter: "WFSGI hands over Armin Dassler's Honorary Director Award to PUMA's CEO Franz Koch. Adidas received it at ISPO 2012. http://t.co/8Kzl2UyC" / Twitter
PUMA® - THE HISTORY OF THE PUMA RIDER
Frank Dassler Died at the Age of 64
Rudolf dassler hi-res stock photography and images - Alamy
Rudolf Dassler - Wikipedia
Two Brothers, Two Sneakers, And A Global Battle For Footwear | Sports History Weekly