Merchant Laclede Building

Historical marker location:

299 North 4th Street, Saint Louis, Missouri

( Marker is at the intersection of North 4th Street and Olive Street, on the left when traveling north on North 4th Street.)

The Pony Express, a mail delivery service that operated from 1860 to 1861, had a route that went through Missouri. The service used a network of riders and relay stations to transport mail from St. Joseph, Missouri, to Sacramento, California, in just 10 days.