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Rand McNally & Co.'s New Street Number Guide Map of Chicago, 1910
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Besides postcard makers, mapmakers also saw a dramatic rise in business as a result of the new system. This 1910 Rand McNally map shows that every eight blocks on the grid (starting from State Street and moving west) marks a major thoroughfare.
The Electronic Encyclopedia of Chicago © 2005 Chicago Historical Society.
The Encyclopedia of Chicago © 2004 The Newberry Library. All Rights Reserved. Portions are copyrighted by other institutions and individuals. Additional information on copyright and permissions.
The Encyclopedia of Chicago © 2004 The Newberry Library. All Rights Reserved. Portions are copyrighted by other institutions and individuals. Additional information on copyright and permissions.