Commercial Base Ball Club - There will be a meeting of the members of this Club at their room, (Gas Company's Building,) No. 31 Pine street on Thursday, 13th March, 1862. A full attendance is requested, as business of importance will come before the meeting. Wallace Delafield, Secretary.-Missouri Republican, March 12, 1862
This is significant because it gives us the address of the Commercial's club room during the Civil War. Also, I can't remember if I ever mentioned that Delafield was an officer of the club or not so let's pretend that this is new information.