Erwin Puts says bye bye Leica – Joeri van der Kloet
Erwin Puts digtal books on Leica for download - Thorsten Overgaard's Leica Blog
Leica Lens Saga by Erwin Puts - meteor
LeicaGraphy
Stumbled across a rare first edition copy of Erwin Put's <Leica Compedium> : r/Leica
Leica Chronicle by Puts, Erwin - 2012
Amazon.fr - Leica Practicum - Theory and practice of LEICAgraphy - silver halide and photo detector imaging with Leica M cameras by Erwin Puts by Erwin Puts (2014-08-02) - Livres
Erwin Puts – Leica... - LFI - Leica Fotografie International | Facebook
Farewell Erwin Puts: One of the world's foremost Leica experts dies at 77 - Macfilos