1900s Postcards

[margoaepi]

I was recently at a garage sale and I picked up these two postcards along with the HM Taylor Wild Bill Donovan. The red tinted one is postmarked 1906, Detroit, Michigan and addressed to the high school baseball coach in Monroe, Michigan. The uniforms seem to say OK Jrs, and the note on the side says "Would like a game with your team for Saturday May 19, 26 or June 2, 7 or 14. Please respond soon. Yours Truly, O.k. Jrs. A.C. F. (Or J) Grosfield - 819 Gr. Boulevard.

The second card is addressed to Mr. Arthur Mitchell, also in Monroe, and is postmarked 1908, Toledo Ohio. The card depicts the De La Salle Base Ball Club - A Hard Combination To Beat. The message on the back says "Compliments of the bunch I am going to try out with. The Orioles are not fast enough for this bunch. Herm[illegible].

Beyond the fact that these are pretty cool, I was wondering if anyone knew anything about either of the teams depicted? Any help would be appreciated. Thanks.