Pittsburgh Gazette Times, May 24, 1913:

Excessive use of the spitball has injured Ed Walsh’s digestion and has thus affected his condition, so that he has not yet reached his best form of this year, according to Dr. James H. Blair, club physician of the Chicago Americans, in a report made today on the pitcher’s condition.
...
According to the doctor saliva needed for Walsh’s digestion has been used on the ball, but with care the pitcher may be in his old time form in a month.

Obviously the ...

Milwaukee Journal, May 23, 1913:

Big Ed Walsh, twirling star of the White Sox, announced today that he has joined the faculty of a correspondence school and hereafter must be addressed as “Professor”. For a paper dollar Walsh will send out to aspirants for fame six lessons on the science of moistening the ball and putting it where the batter’s bat isn’t. Walsh starts his classes Monday.

This is not something that strikes me as a useful service. Nonetheless, I’d love to be able to read Walsh’s ...

Toledo News-Bee, March 19, 1913:

The White Sox nosed out the Portland coast leaguers, 5 to 4, at Visalia, yesterday. Ed Walsh had been billed to pitch and when he failed to take the slab the county sheriff ordered him to get busy on the “no show, no pay” argument. Walsh twirled the last inning.

It would have been pretty terrible if Walsh’s arm had gone sproing as a result of being ordered to pitch.