"St. Louis Sportsman's Park and Club (Christ. Von der Ahe)" was read on the docket of the Second District Police Court yesterday, and after it, under the head of "Alleged Offenses," the words "Base ball, cricket, etc., without license." Lovers of sport assembled to hear all about it, but they were disappointed, for the case was continued until the 12th, next Wednesday.
-St. Louis Globe-Democrat, October 9, 1881
So I guess Von der Ahe didn't bother to get a business license for the operation of Sportsman's Park. I couldn't find anything else about the case and I'm assuming, given Von der Ahe's political connections, that the entire thing went away.