English: A beautiful 1855 first edition example of Colton's rare two part map of Chicago, Illinois and St. Louis, Missouri. Sheet is divided into two sections. Both are hand colored in pink, green, yellow and blue pastels to identify city wards. Both maps also offer extraordinary detail at level of individual streets and buildings. Both maps are drawn to the same scale. Surrounded by Colton's typical spiral motif border. The right hand map, Chicago, Illinois, depicts from Reuben Street to Lake Michigan and from Center Street to Bridge Street. In addition to all major streets, this map identifies various railroad depots, the Marine Hospital, the Railroad Depot, a market and a number of unnamed public squares. The left hand map, St. Louis, Missouri, covers from Pratte Avenue and Jefferson Avenue to the Mississippi River and from Branch Street to Bent Street. In addition to all major streets, this map identifies the Post Office, Court House, Chouteaus Pond, Exchange Square, the City Work House, the City Hospital, Washington Square, and Lucas Market. Dated and copyrighted to J. H. Colton, 1855. Published from Colton's 172 William Street Office in New York City. Issued as page no. 45 in volume 1 of the first edition of George Washington Colton's 1855 Atlas of the World .