Stemmons, John D., 1973. Census records, tax lists, petitions, oaths of allegiance, church membership lists, city directories, poll lists, etc., are important landmarks to facilitate genealogical research. This compendium cites available records in each state, and notes organizations and individuals who are currently updating the data. A very comprehensive site, some services and searches are free, some are only available by subscription. The site claims members have access to over 800 databases and 200 million names.
Site includes search engine.
A good starting place for beginners, this popular site boasts over 40,000 to links to a broad range of sites. No index or search engine. A very comprehensive searchable site. Some fee-based services available. Features printable census abstract forms for research.