In an effort to better serve their users, the Engineering Library at the University of Oklahoma surveyed 30 public, academic, and state agency libraries to identify libraries with collections of national standards, codes, and handbooks that are accessible to the public. This directory presents data received about the holdings of eight of those libraries as well as the holdings of the University of Oklahoma libraries. Not a highly detailed compilation of any particular library's holdings, the guide serves as a user's index to possible locations for particular standards. Beside a list of the addresses and telephone numbers of Oklahoma libraries is information on their lending policies. Data are displayed in a table, which includes information on: (1) the professional society--e.g., American Association of Cereal Chemists--or the general field from which the standard originates--e.g., Building Codes; (2) the name of the publication in which the standard appears; (3) location of the publication; and (4) information about the currentness of the collection--e.g., 1960-current. Also included is information about other organizations with governmental, historical, and single standards. The appendix lists 38 public and state libraries and 31 academic libraries throughout the United States that maintain microfiche collections of codes, handbooks, standards, and specifications. (SD)