Joseph Lacroix House, ca. 1870 and 1888

The caption for the photograph suggests the house was the oldest in St. Louis at that time; the Joseph Lacroix house was the only home built during the 18th century at the corner of Olive and Third streets. According to the National Park Service, Lacroix built the home himself as a vertical log house sometime around 1797. The photograph itself was from Boehl and Koenig photographers (ca. 1870), and it is the original for the sketch seen below. The full resolution scan of the above image is located on Wikimedia:

http://upload.wikimedia.org/wikipedia/commons/1/13/Oldest_House,_St._Louis,_Missouri,_by_Boehl_%26_Koenig.png

From Commercial and Architectural St. Louis by George Washington Orear (1888). This scene depicts an "old stockade house" in the oldest portion of St. Louis, at Third and Olive streets.