Miscellaneous References and Mentions

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

Note: When we started collecting data about Illco, we were inconsistent about keeping track of where that data came from. As a result, this list of references and mentions is probably incomplete.

Shell Oil Road Map for Wyoming (1956)

Published by Shell Oil Company

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