Miscellaneous References and MentionsWhile our initial information about Knappa came from various goverment sources (GNIS, FIPS), we also found mention of Knappa 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 Knappa. We hope that they will be useful to you. Note: Initially, we were careless about keeping track of where our Knappa data came from. The following list of references and mentions is incomplete. Business Atlas and Shippers' Guide (1895)
 A note taken from the Shipper's Guide for Knappa: Mobile Oil Map of Oregon (1949)
 Knappa 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 Knappa. See our Misc Page for Knappa for more information. Footnotes ...
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