This page provides links to linguistic atlases and other major linguistic research that is available on the web.
MLA’s US Language Map: an interactive map of who speaks what in the US
Portland Dialect Study: project on language variety in the Pacific Northwest
NCSU’s North Carolina Language and Life Project
University of Pennsylvania’s TELSUR/Atlas of North American English
UGA’s Linguistic Atlas Project
Clearly, this is only a partial list of what is currently available on the web. Feel free to leave links in the comments section or s: jocumpau @ odu.edu