Email Record: Final report of the highway cost allocation study. Letter from the Secretary of Commerce transmitting Part VI, "Studies of the economic and social effects of highway improvement," which relates to the final report of the highway cost allocation study, ordered printed as House Document 54, pursuant to section 210 of the Highway Revenue Act of 1956 (70 Stat. 387), as amended by section 2 of the act approved August 28, 1958.