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The Commemorative
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The Commemorative Quarter for Maryland







Miscellaneous References and Mentions

While our initial information about Hartley came from various goverment sources (GNIS), we also found mention of Hartley 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 Hartley. We hope that they will be useful to you.

Note: Initially, we were careless about keeping track of where our Hartley data came from. The following list of references and mentions is incomplete.

 

Rand McNally Map of Maryland (1911)
Published by Rand McNally & Co.

Hartley 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 Hartley. See our Misc Page for Hartley for more information.

Footnotes ...

<1>A copy of their list with background information can be found at:

      https://cblevins.github.io/us-post-offices/data-biography/