I used several different sources of information while building this website. Here's a complete listing of the various books and sources that I gathered the information from, especially for the models section of the site. Where possible, I've linked the books to sources online where you can purchase them. I'm not affiliated with any of the linked sites; I am just trying to provide a convenient way for you to purchase the book in question if you so desire.

Author: Peter Henshaw
Publisher: Stoeger Publishing Company
Gives specifications on several different bikes as well as a general history of Harley-Davidson Motor Company.

Author: Doug Mitchel
Publisher: Publications International Ltd.
Several hunderd photographs, including selection from musuem collections, memorabilia, ads, and brochure collections.
Amazon.com | Barnes & Noble

Author: Rick Conner
Publisher: Motorbooks International
Valuable resource for those who want complete information for their resortation jobs or general knowledge, this book includes models offered, production run, retail prices, technical specifications and much more.

Author: Doug Mitchel
Publisher: Publications International Ltd.
Another book from Doug Mitchel, this one is composed of several high color photographs broken down into the six Harley-Davidson “eras”
Amazon.com | Barnes & Noble

Author: Oluf Fritz Zierl, Dieter Rebmann (Photographer)
Publisher: Konemann GW
This huge two volume hardcover set covers almost every possible aspect of Harley-Davidson, both from the Motor Company point of view, as well as the biker lifestyle.
Amazon.com | Barnes & Noble

Author: Thomas C. Bolfert
Publisher: Motorbooks International
The “official” publication by the Motor Company, this book was recently re-issued to celebrate Harley’s 100th Anniversary.

Author: Peter Henshaw & Ian Kerr
Publisher: Book Sales
While impresive in size (and weight!), this isn’t what you’d normally call an “Encyclopedia”. While it does have several nice photographs of various types, beware of the information contained within, as it seems some of it is flat out wrong.
Amazon.com | Barnes & Noble

Author: Hugo Wilson
Publisher: DK Publishing
Valuable resource for those who want complete information for their resortation jobs or general knowledge, this book includes models offered, production run, retail prices, technical specifications and much more.

Author: Roland Brown
Publisher: Hermes House
While not restricted to Harley-Davidsons, it does have a large section for Harley motorcycles, touching on the racing and customizing scene. A good read for anyone who likes motorcycles of all types.
Amazon.com | Barnes & Noble