Miscellaneous References and MentionsWhile our initial information about Callao came from various goverment sources (GNIS, US Census, FIPS), we also found mention of Callao 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 Callao. We hope that they will be useful to you. Note: When we started collecting data about Callao, 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 Callao: List of Post Offices in the United States (1870)
Map from 1904 (unknown title/publisher) Shell Oil Road Map for Missouri (1956)
Callao is contained in a comprehensive list of Post Offices that was created by Cameron Blevins and Richard Helbock.<1> We found Callao in these Censuses: 2010-1990. See our Census Page for Callao for more information. Both the GNIS and FIPS databases contain entries for Callao. See our Misc Page for Callao for more information. Railroad Mentions of Callao: Callao was mentioned in the following schedule: Trailways Santa Fe Bus Time Table (July 1945) Footnotes ...
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