1. Data access description: Census tabulations available on computer tape series. CT-[Intended as introductions to means of access to Census Bureau data for persons with data requirements not fully met by printed reports.]. 8. Public use samples of basic records from 1960 and 1970 censuses. Bookmark Corporate/Agency Authors: Census Bureau and Commerce Dept. Publisher: Census Bureau Date: May 1971 SuDoc number: C 3.240-540/3:8