History of Illustration
Here are websites that cover the history of illustration and illustrators of the past.National Museum - America Illustration
American Illustrators Gallery NYC
The Golden Age of Illustration
Recommended Illustration BooksAmerica's Great Illustrators by Susan E. Meyer
The Illustrator In America 1880-1980 by Walt and Roger Reed
Jessie Willcox Smith: American Illustrator by Edward D. Nudelman
J.C. Leyendecker by Michael Schau
Vargas by Benedikt Taschen
Creative Illustration by Andrew Loomis
Figure Drawing For All It Is Worth by Andrew Loomis