1. Federal supply schedule (formerly General schedule of supplies); Telephone and teletypewriter service, Michigan Bell Telephone Company, Detroit, Michigan, area under class 102, Oct. 1, 1947-June 30, 1948 and thereafter until further notice. Bookmark Corporate/Agency Authors: Federal Supply Bureau and Treasury Dept. Publisher: Federal Supply Bureau Date: [1947.] SuDoc number: T 58.8/8:102/8/947-48