The Commercial Base Ball Club have their regular field exercise on Gamble Lawn this Saturday afternoon. Members are requested to be prompt in attendance, and Base Ball players generally are invited to the field.
-Missouri Republican, June 18, 1864
Also of note is that the Petersburg campaign began on June 9, 1864, and on the day that this notice appeared in the Republican, the Second Battle of Petersburg ended, with little having been achieved. When that battle ended, the two sides dug in and the seige of Petersburg began. It would end in April of the following year.
In St. Louis, on June 18, a number of Copperheads escaped from the Gratiot Street Prison. Several were shot and killed while trying to escape but some actually made it all the way to Canada. I find it ironic that these men had to run to Canada to gain their freedom, just as slaves in the South, using the Underground Railroad, had to escape to Canada to gain theirs.