David E Evans, The Ingenious Mr Pedersen.

First published by Allan Sutton, Dursley, 1978, ISBN 0750900644.
Auch in Deutsch.
Unfortunately this book is sold out and there is no saying when it will come on the market again. :-((

Not availble at the moment (Amazon.com)
More about David Evans on "Pedersen on tour"

David Evans published a new book on Mr. Pedersen in 2007 A Man of Genius.

David B. Perry:
"Bike Cult" (pp105.106)

The Dursley Gazette. 22 Sep. 1995:
"Last journey of a cycle genius" by Allan Guy