| Miscellaneous References and MentionsWhile our initial information about Rock Island came from various goverment sources (GNIS, US Census, FIPS), we also found mention of Rock Island 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 Rock Island. We hope that they will be useful to you. Note: Initially, we were careless about keeping track of where our Rock Island 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 Rock Island: List of Post Offices in the United States (1870)
 Rock Island was listed as Rock Island Courthouse. SPV's Comprehensive Railroad Atlas of North America - Prairies East & Ozarks
 Table of U.S. Post Offices in the United States (Jan. 1851)
 Rock Island was listed as Rock Island Courthouse. U.S. Post Offices (Oct. 1846)
 Rock Island was listed as Rock Island Courthouse. Map from 1860 (unknown title/publisher) Map from 1870 (unknown title/publisher) Shell Oil Road Map for Illinois (1956)
 We found Rock Island in these Censuses: 2010-1990. See our Census Page for Rock Island for more information. Both the GNIS and FIPS databases contain entries for Rock Island. See our Misc Page for Rock Island for more information. Railroad Mentions of Rock Island: Rock Island was mentioned in the following schedule: Trailways Santa Fe Bus Time Table (July 1945) | 
