According to Library of Congress name authority on 2 June 2009:
1) Dunne, Peter, 1943-
2) Dunne, Pete, 1951- (no "r")
The author currently listed as (1), author of Pete Dunne's Essential Field Guide Companion, is Pete Dunne, not "Peter". If you have one of these books listed as by "Peter" in your catalog, please consider editing the author so that you can see all of Pete Dunne's books in the same place. Thank you!