This inventory contains summary abstracts of 305 current (1976-1987) non-bibliographic machine-readable databases and national health care data that have been created by public and private organizations throughout the United States. Each of the abstracts contains pertinent information on the sponsor or database, a description of the purpose and scope, subject heading or descriptors covered, geographic coverage of the database file and time coverage, availability in what form and under what conditions, and contact person. (JD)