Miscellaneous References and Mentions

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

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

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