URSUS: Shared Catalog of the University of Maine System, Bangor Public Library, Maine State Library, Maine State Law and Legislative Reference Library

OLIS, Oxford University libraries' online catalogue

The Hargrett Rare Book and Manuscript Library at the University of Georgia

NEWFOUNDLAND and LABRADOR MAP BIBLIOGRAPHY

U.S. Library of Congress, Geography and Map Division,

University of Florida Map and Imagery Library

THE HISTORY OF CARTOGRAPHY::

Early Modern Cartographic Resources on the World Wide Web

Map History / History of Cartography: THE Gateway to the Subject

Caert-Thresoor, Journal for the history of cartography in the Netherlands

GENERAL INFORMATION::

Odden's Bookmarks, The Fascinating World of Maps and Mapping