The History of the Chopper Motorcycle

Uneasy riders: Which 'Captain America' chopper is the real film relic? - Los Angeles Times

How Choppers Work

Easy Rider' chopper up for auction in Calabasas might be phony – Daily News

Captain America' chopper from 'Easy Rider' sells for record-setting $1.35 million

2004 Harley-Davidson Chopper

The 70's Style Chopper - Royal Enfield North America

The History of the Chopper: The Ultimate American Folk Art Movement - Flashbak

Peter Fonda's 'Easy Rider' Harley Could Sell for $500,000 Next Month – Robb Report

Fueling the chopper culture: The 1960s end with a bang and a rumble

Pamela – Pittsburgh Moto – Pittsburgh's Custom Motorcycle Culture

Motorcycle Color History Ser.: Choppers by Mike Seate (2003, Hardcover, Revised edition) for sale online

CATALONIA CHOPPER: 1990 Harley-Davidson Springer by Free Kustom Cycles. - Pipeburn