Historical U.S. county outline map collection, 1840-1980
By: senior editor Thomas D. Rabenhorst, general editor Carville V. Earle ; cartographers Jeff Anzevino, Barbara Plunkett.
Contributors: Rabenhorst, Thomas D., 1944-; Anzevino, Jeff.; Plunkett, Barbara.
Publisher: Dept. of Geography, University of Maryland Baltimore County
Published: 1984
Place of publication: Baltimore, Md
Language: eng
Number of pages: 15
Subjects: United States -- Administrative and political divisions -- Maps.; United States -- Maps, Outline and base.
Notes: "U.S. county boundary maps for the census decades"--P. 2 of portfolio cover.

Title from portfolio cover.

Scale of blank national county maps ca. 1:12,000,000.