Additional bus companies, listed as existing during additional years or decades, are mentioned in old City Directories, and in the WPA American Guide Series of state guidebooks.
Exemplar Stages - served Aurora to Rockford and intermediate points.
Rantoul Transit Co. - suburban served Rantoul, Chanute Field.
Suburban Transportation - served Decatur and suburbs.
Burkitt-Hall Bus Line - served Zeigler, Cleabourne, Christopher, Buckner, West City, Benton.
M.&W.L. Bus Lines - served Murphysboro to Wolf Lake.
Harrisburg-Dorrisville Bus Co. - began operations in 1938 by Travelstead Transportation Co., sold in 1941 to Harrisburg-Dorrisville Bus Co., served Harrisburg and vicinity.
Jackson Bus Line - began operations in 1936, served Hamilton, Warsaw, Keokuk IA.
The availability of information from the Illinois Commerce Commission is more thorough, than the availability of similar information for most other states. Including for the issuance of each Certificate of Convenience and Necessity. For some bus companies listed above, a year is indicated for when that company was issued a Certificate of Convenience and Necessity.