Bowling Green State University's Popular Culture Library

British Comics Collection at the British Library Newspaper Library

Centre National de la Bande Dessinée
Angoulêmem, France

The Library of Congress’ Caroline and Erwin Swann Foundation

New York Public Library’s Comic Books: A Research Guide

Ohio State University's Cartoon Research Library

University of Kent at Canterbury's Centre for the Study of Cartoons and Caricature

University of California's Riverside’s Eaton Collection

Virginia Commonwealth University’s
Comic Arts Collection

U.S. Political Cartoons at the British Library: An Introductory Research Guide [pdf]