Marty the "Chicago" was Schwinn's lower priced line with "The World" being its main line. The 1898 catalog list the Chicago bikes at the end of the catalog. The World Model 22 Standard Roadster listed for $75 while the Special "Chicago" Roadster Model 31 listed for $40 and had a two piece crank, different fork, and lesser grade components. Interesting to note that Schwinn only guaranteed their World or Chicago bikes for 60 days from date of sale or at the latest 60 days from Dec 31, 1898 for all 1898 bicycles. V/r Shawn