Urban Transportation Information System,1921-1971. United States Historical Documents Institute. Washington: U. S. Historical Documents Institute, 1973.
MIC FLM Z 7164 U72 U72X 10 reels. 35 mm.
United States Historical Documents Institute. Transportation Masterfile, 1921-1971. Cumulative Updating Service, 1971/74. U.S. Historical Documents Institute, 1974.
MIC FLM Z 7164 U72 U72X SUP 7 reels. 16 mm.
The main file reproduces the Department of Transportation's list of some 50,000 citations, many with abstracts, to articles in over 1000 journals published from 1921-1971 dealing with all aspects of urban transportation. The Supplement covers the period from 1972-1974.
Alphabetically by subject, and chronologically under each subject heading.
Subject Guide to Transportation Masterfile
FLM Z 7164 U72X INDEX 1921-71 , and Supplement 1972/74. Washington: U.S. Historical Documents Institute, 1973. Contains a list of the subject headings used and U72 reel locations.
Urban Transportation--United States-Abstracts