Miscellaneous References and MentionsWhile our initial information about Upperco came from various goverment sources (GNIS, FIPS), we also found mention of Upperco in various books, maps and other sources. We've created the following list to keep track of the sources that proved useful in adding to our knowledge about Upperco. We hope that they will be useful to you. Note: Initially, we were careless about keeping track of where our Upperco data came from. The following list of references and mentions is incomplete. List of Post Offices in the United States (1870)
Table of U.S. Post Offices in the United States (Jan. 1851)
U.S. Post Offices (Oct. 1846)
Maryland: Official Transportation Map (2003)
Rand McNally Map of Maryland (1911)
Upperco is contained in a comprehensive list of Post Offices that was created by Cameron Blevins and Richard Helbock.<1> Both the GNIS and FIPS databases contain entries for Upperco. See our Misc Page for Upperco for more information. Footnotes ...
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