Published since 1878, this is the authoritative and comprehensive summary of statistics on the social, political, and economic organization of the US. [Print versions are available in the Library Reference Room (Call # HA202 .U5). Earlier editions are available on the Census website.]
Gateway site covers Cartography, Dictionaries, Education, Geographic Information Systems, Geomatics, Human Geography, Navigation, Organizations, Physical Geography, Place Names, Publications, and Urban and Regional Planning.
The Sanborn Fire Insurance Map Company, established in 1867, compiled and published maps of U.S. cities and towns for the fire insurance industry to assess fire risk. The MU collection includes maps for Missouri towns and cities with supplements dating from 1941-1992.