On-Line Publications...

MapForum - an excellent on-line publication on The History of Cartography
(the first comprehensive periodical for antique map collectors on the web)

The David Rumsey Collection - dowload the entire reference catalog for this important collection
(one of the most comprehensive collections of 18th & 19th century American materials)

Antique Maps by Moreland & Bannister - a complete on-line version of this popular reference book

Mercator's World Magazine - on-line version of this magazine for map collectors
(note that only selected articles from the print magazine are available on-line)

Where To Find Printed Reference Books, Cartographic Journals and Periodicals...

MapSage.com - The Internet operation of Early Map Source, LLC.
(publishers of Rodney Shirley's The Mapping of The World and Tooley's Dictionary of Mapmakers)

Mercator's World On-Line Store - the bookstore of Mercator's World Magazine

The History of Cartography Project by David Woodward - The University of Wisconsin
(the website for this mammoth undertaking contains a wealth of information in addition to order instructions)

The University of Chicago Press - publishers of books on Cartography and Geography
(including the Lectures In The History of Cartography series)

HES Publishers BV - publishers of books on The History of Cartography based in The Netherlands

The Hakluyt Society - pubishers of historical travel literature since 1846

Imago Mundi - The International Journal for The History of Cartography

Cartographica Helvetica - Journal for The History of Cartography

also see... Books To Get You Into The Subject - from Tony Campbell's Gateway site at the British Library
(a useful listing of some of the best general reference books on the subject)

Map & Historical Societies...

IMCoS - The International Map Collector's Society (publishers of The IMCoS Journal)

The Phillip Lee Phillips Society of The Library of Congress

The Boston Map Society

The Washington Map Society (publishers of The Portolan)

The New York Historical Society

also see... Map Societies Around The World - a useful index of societies maintained by Bill Barrow at Cleveland State University

Major Library Collections...

Map Collections Home Page - The Library of Congress

Geography and Map Division - The Library of Congress

The Map Division of the New York Public Library

The British Library Map Collections

The Yale University Map Collection

The Osher Map Library and The Smith Center for Cartographic Education

The Newberry Library

The John Carter Brown Library

The Map Division of The Clements Library at The University of Michigan

The Harvard Map Collection

University of California at Berkeley Map Collection

The Hargrett Library Map Collection at The University of Georgia Libraries

Some Great On-Line Exhibitions...

On-Line Exhibition Catalogs from The Osher Map Library
(this site hosts a number of exhibitions on a variety of cartographic subjects)

Ortelius' Theatrum Orbis Terrarum, 1570 - The Library of Congress
(includes a high-resolution zoom feature and images of all 53 maps from the first edition)

Windows On The World from The History of Cartography Project - The University of Wisconsin
(digital version of this exhibition with introduction by David Woodward)

Exploring The West From Monticello - The University of Virginia Library
(one of the best on-line exhibition catalogs ever produced with great articles and images)

Cosmographia: A Close Encounter - The Museum of the History of Science, Oxford
(an excellent Student Virtual Exhibition with images and text, including a comprehensive reading list)

Cultural Readings: Colonization in Print in the Americas - A Penn Library Exhibition
(some maps, but mostly engravings of the New World, including some nice images from DeBry)

Sites Relating to The History of Astronomy and Scientific Instruments

The History of Astronomy Site from The Astronomical Institutes of Bonn University

The Adler Planetarium - includes information on their Rare Book and Works On Paper collections

Out Of This World, The Golden Age of The Celestial Atlas - The Linda Hall Library
(a wonderful on-line exhibition from their rare book collection with very nice images)

Astronomiae Instauratae Mechanica by Tycho Brahe - The Smithsonian Institute Libraries
(includes an introduction, the complete text, and high quality images from the 1602 edition)

Rittenhouse - The Journal of the American Scientific Instrument Enterprise

Odds and Ends...

Cartography - Calendar of Events and Cartography - Calendar of Exhibitions
(two very useful sites compiled and updated by John W. Docktor)

The International League of Antiquarian Booksellers

The Antiquarian Booksellers Association of America (ABAA)