The last posting dealt with Australia; this one pertains to the various explorations undertaken between 1000A.D. and the 19th century. Needless to say, this is not a comprehensive listing, but this is an enumeration of some sites I have found helpful and educational. American Journeys presents excerpts from source material ranging from the Viking “discovery” of America to the early 19th century. It is a useful repository of information, culling from a wide variety of documents and presenting them all on a single site rather than having you endlessly searching the Internet. Another great site is hosted by the Library of Congress – Early Western Travels, 1748-1846. This is a digital version of the 32-volume work edited by the tireless Reuben Gold Thwaites (his obituary here; selected works here). Another favorite spot of mine (because I have a deep, abiding interest in this area) is Mountain Men and Fur Trade that contains a multitude of primary source material from journals to bills of lading.
Online Primary Sources: Early Explorations of the United States