Peter Gantriis is founder and president of RPM Research, LLC, a market research and consulting firm that works with the world’s leading automotive and powersports manufacturers. Peter has an MBA from the University of Minnesota and is an avid motorcycle and car enthusiast. He lives near St. Paul, Minnesota, with his wife and three children. When he’s not using his free time writing for Motorbooks, Peter enjoys boating, skiing, and investing in slow racehorses. Official Website: www.motorcyclemarketresearch.comOn Twitter: @rpm_research
Dain Gingerelli began writing for motorcycle and automotive magazines in 1970. He’s been an editor for six motorcycle magazines, and he’s authored numerous hot rod books for Motorbooks. His motorcycle titles include 365 Motorcycles You Must Ride and Harley-Davidson Museum Masterpieces.
Doug Mitchel is one of the industry's hardest-working motorcycle writers and photographers. He has written several motorcycle books, including the best-selling Harley-Davidson (Motorbooks, 2007), a celebration of 100 years of America's iconic motorcycle.
Greg Field has written a number of books on the subject of motorcycles, including several volumes dealing with Harley-Davidson, including Harley-Davidson Knucklehead, Harley-Davidson Panhead, Harley-Davidson Century, Harley-Davidson Evolution Motorcycles, Harley-Davidson Softail, Original Harley-Davidson Knucklehead, and Original Harley-Davidson Panhead. Most recently he contributed several chapters to Harley-Davidson Motorcycles: A Complete History.