Minor League rosters are hard to locate.
I wanted to recreate the Texas League and Southern Association, but couldn't locate anything but info of some of the stars from some of the years and league leaders in hitting and pitching.
I got a Texas League media guide, two books by Bill O'Neal, one about the TL and one about the Southern Association/Southern League...spent about 75 dollars...not worth the money.
O'Neal has written books about the PCL, International League and American Association. Sorry to say, I wouldn't recommend them. He will cover the leagues by decades and spend about a page for each season...and doesn't review each season.
One source is The Sporting News...they have an online subscription service for about $15 a month. You could go back to the dates Dunn owned the Orioles (he was the finest owner in history) and see pretty good coverage of the International League. You can see league batting and pitching stat leaders periodically and box scores (many are hard to read and names were abbreviated to fit in the box score)...no first names, either. You will have to get them from the articles.
But the best site has the 100 greatest minor league teams of all time and each one is covered very thoroughly...listing rosters, pitching and hitting stats...and comments about the players. Baltimore is listed several times, so you might be able to get rosters there.
Jack Dunn and his Baltimore Orioles had 6 of the top 19 teams of all time...1919 to 1924.
http://www.minorleaguebaseball.com/history/top100/