Tuttle Antiquarian Books is the largest dealer in "used" genealogy books.
Barbara Green's Used Genealogy Books has both local history and genealogies.
Broad View Books has local history and genealogy books for the New England area.
Jean Austin Books has over 1200 genealogy books and disks; online bible records and free online newsletter.
Parks Books deals in new MN books but also has a section of "used" books.
High Ridge Books deals in maps and atlases.
Bryon Sistler & Associates deal in new books for KY, TN, NC, VA.
Cindi Howells list of links to book vendors both new and used.
ILGenWeb A link to history and genealogy in Illinois. All 102 counties are covered.
Irish Genealogy on the Web presented by the
Irish Genealogical Society, Int'l (IGSI)