A moment ago at sabrcollegiate Files, I posted "Spring Training for
College Baseball Clubs" from Baseball Magazine, April 1921.

"Yale University in sending her team to a permanent training camp in
the south, has inaugurated a new phase of intercollegiate baseball.
Never before has any university established a site for spring quarters
. . .
. . . [Yale plans to] remain at Macon, Ga., for a period of ten days
where the team will meet in in daily contests with southern college
nines and several major league clubs."

That is about 10% of the one-page article, 341 KB in pdf format.

Paul Wendt