Haddonfield and the 'Bone Wars' - Information about how the war of dinosaur discovery between Edward Drinker Cope and Othniel Charles Marsh began in Haddonfield, N.J. in 1868.
Wikipedia: Bone Wars - Tells how Edward Drinker Cope and Othniel Charles Marsh came to compete in the discovery of dinosaur bones, and the havoc they caused.
Wyoming: The Bone Wars - An illustrated history of the Bone Wars. It includes photos taken from 1904 - 1934 and includes reproductions of engravings from 1871.