"There are still some St. Louisans who may recall when it was quite the thing on Sunday morning to call at this building--at Third and Olive streets--and get the mail. Then, in proper morning attire, there would be social visits to near-by oases where questions of the day were discussed amid congenial surroundings. Thus did St. Louisans, like the folks in country towns, go to the Post Office long before the civil war was even in the making. Later, as the city moved westward, the building was devoted to other federal uses as it is today in minor degree."