Miscellaneous References and Mentions

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

Note: When we started collecting data about Principio Furnace, 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)
Published by Rand McNally & Co.

A note taken from the Shipper's Guide for Principio Furnace:
Services available in 1895: had a Post Office, an Express Office, no Railroad mentioned

List of Post Offices in the United States (1870)
Published by the Government Printing Office

Table of U.S. Post Offices in the United States (Jan. 1851)
Published by W. & J.C. Greer, Printers

Maryland: Official Transportation Map (2003)
Published by the State Highway Administration

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

Principio Furnace 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 Principio Furnace. See our Misc Page for Principio Furnace for more information.