Miscellaneous References and MentionsWhile our initial information about Signal came from various goverment sources (GNIS, FIPS), we also found mention of Signal 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 Signal. We hope that they will be useful to you. Note: Initially, we were careless about keeping track of where our Signal data came from. The following list of references and mentions is incomplete. Business Atlas and Shippers' Guide (1895)
A note taken from the Shipper's Guide for Signal: Shell Oil Road Map for Arizona (1956)
Signal 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 Signal. See our Misc Page for Signal for more information. Footnotes ...
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