Summary: This page links to a map of the United States, labeled with the starting number of the 5-number geographic classification range for each U.S. state, from class G in the Library of Congress classification schedule, and provides an example of the LC pattern used when classifying maps of U.S. states and their subdivisions.

Click here for map: US map with G-classification numbers.pdf

Example:

Michigan is labeled 4110 on the map. This means the following range of five numbers is used when creating LC call numbers for maps of Michigan and its subdivisions:

			Example MSUL (090) call number
G4110	Michigan	general maps	general map: G4110 1879 .F3 Map
G4111	Michigan	maps by subject	road map: G4111.P2 1950 M5 Map
G4112	Michigan	maps of regions, natural features, etc., A-Z	Upper Peninsula tourist map: G4112.U6E635 2015 M3 Map
G4113	Michigan	maps of counties, A-Z	soil map of Eaton County: G4113.E2J3 1937 M5 Map
G4114	Michigan	maps of cities, towns, townships, etc., A-Z	street map of Lansing: G4114.L3 1994 C4 Map

Each U.S. state follows the same pattern.

Contact	Tim Kiser
Team	CMS
Updated	May 2018
Created	May 2018