Sports Caricatures
Mainly football stars past and present: downloads, links and submission details.
http://www.sportcartoons.co.uk

The Centre for the Study of Cartoons and Caricature
Research centre and picture library located in the Templeman Library at the University of Kent: galleries, location information, services offered, contact details, scale of charges and publications.
http://library.kent.ac.uk/cartoons/