"Cardlike displays present a familar context for patrons accustomed to card catalogs, who may otherwise be nervous about online catalogs (Crawford, 1986: 44)
The adoption of an enhanced card catalog image as the public display format by OCLC as part of its effort to establish some level of bibliographical control for WWW and other Internet resources is not unexpected. Indeed, in considering the history of the development of display formats for records in the first generation online catalogs, 'cardlike' displays were a common format used, as 'librarians [found] catalog cards familiar'(Crawford, 1986: 43).
Walt Crawford, Bibliographic displays in online catalogs. (White Plains, N.Y.: Knowledge Industry Publications, Inc., 1986).