1920?. Clason Map Co. Scale approximately 1:1,050,000 (W 97⁰00ʹ--W 89⁰40ʹ/N 49⁰00ʹ--N 43⁰00ʹ). "The green guide series"--Cover. Includes inset of "Cook County, n.e. corn...
1920. Hudson Map Company. Cartographic Details: Scale approximately 1:21,250. Scale incorrectly stated at 1/6000. Includes index. At lower right: C.L.H. & H.D.G., Del.. In l...
1920. Zeese, Paul and O'Hara and Zeese Civil engineers and Surveyors. Scale approximately 1:150,000 (W 93⁰49ʹ--W 93⁰02ʹ/N 47⁰02ʹ--N 46⁰08ʹ). 79 x 47 cm.
1920. Minnesota State Board of Immigration and McGill-Warner Co. Scale approximately 1:918,000. Panel title. Insets: Mesabi Range -- Cook County, northeastern Minnesota -- St. Paul-Minneapolis and vicinity. Inset...
1920 - 1929. Duluth & Iron Range Railroad Company and Adept Map Co. Scale approximately 1:73,700 (W 92⁰28ʹ32ʺ--W 92⁰28ʹ32ʺ/N 47⁰57ʹ40ʺ--N 47⁰57ʹ40ʺ). Principal points of interest indexed. 43 x 83 cm.
1920. Mutual Automobile Association of Minnesota. Scale not given ; (W 97°15ʹ--W 89°23ʹ/N 49°23ʹ--N 43°30ʹ) Blue line print. Index to trail markings with symbols. "Gus. G. Martin Co., Printers." 67...
1920 - 1929. Wright Land Office (Fergus Falls, Minn.). Scale approximately 1:170,000 (W 96⁰18ʹ--W 95⁰08ʹ/N 46⁰47ʹ--N 46⁰03ʹ). Includes text in upper corners. 48 x 56 cm.
1920 - 1929. Minn Saint Louis County Highway Dept. Scale not given. Blue line print. In pencil outside of neat line "1923?". Includes list of county commissioners. 79 x 36 cm.