Miscellaneous References and MentionsWhile our initial information about Onyx came from various goverment sources (GNIS, FIPS), we also found mention of Onyx in various books and other sources. We've created the following list to keep track of the sources that proved useful in adding to our knowledge about Onyx. We hope that they will be useful to you. Note: When we started collecting data about Onyx, we were inconsistent about keeping track of where that data came from. As a result, this list of references and mentions is probably incomplete. Business Atlas and Shippers' Guide (1895)
 A note taken from the Shipper's Guide for Onyx: Onyx 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 Onyx. See our Misc Page for Onyx for more information. Footnotes ...
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