genealog.lc-ar: Books in the on-line Library of Congress catalog with the subject "Arkansas--genealogy."
genealog.vital-ar: Where to write for Arkansas vital records, Arkansas genealogical and historical societies, and the state archives. Includes a good overview of the materials available at the Arkansas History Commission. Or check
Arkansas Vital Records Information for more current info on where to write for vital records.
Other Arkansas Genealogical and Historical Resources on the Net