State trunk highway system
By: by C.M. Babcock, commissioner of highways and John H. Mullen, chief engineer, Minnesota Highway Department. Read at conference of County commissioners and auditors, April 8 and 9, 1920.
Contributors: Mullen, John H.
Published: 1920
Place of publication: [St. Paul?
Language: eng
Number of pages: 13
Subjects: Roads -- Minnesota
Notes: Cover-title.