Miscellaneous References and MentionsWhile our initial information about Petra came from various goverment sources (GNIS), we also found mention of Petra 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 Petra. We hope that they will be useful to you. Note: When we started collecting data about Petra, we were inconsistent about keeping track of where that data came from. As a result, this list of references and mentions is probably 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)
Petra is contained in a comprehensive list of Post Offices that was created by Cameron Blevins and Richard Helbock.<1> The GNIS database contains an entry for Petra. See our Misc Page for Petra for more information. Footnotes ...
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