First Triple Crown

Historical marker location:

700 Clark Avenue, Saint Louis, Missouri

( Marker is on South 8th Street (Old U.S. 66) south of Spruce Street, on the right when traveling north.)

October 1, 1922. Greatest Moments.

The Missouri River is the longest river in North America, stretching for 2,341 miles from its source in Montana to its mouth in the Gulf of Mexico.