Fourth and Olive streets, looking west (in the top photo). The Ohio & Mississippi Railroad offices were in the building on the right. Its tracks got to Illinois-town, now East St. Louis, in 1857. An 1865 advertisement said the Ohio & Mississippi was "the Great Broad Gauge Route to New York, Philadelphia, Baltimore and Boston. Only route to Cincinnati without change of cars. Trains are run by Telegraph. Only route running those elegant state room sleeping cars." The Ohio & Mississippi is now part of the Baltimore & Ohio- and Fourth and Olive has also changed (as shown in the lower of the two photos).