I am in the process of researching the career of Cannonball Bill Jackman. To date I have recovered 360 partial or complete pitching boxscores which show 205 wins and 93 losses. 40 home runs as a batter have also been recovered. While I estimate the upper limits of his numbers could be 1,500 pitched games, 800 wins and 150 home runs, I hope and expect to document at least 500 pitching wins.
Jackman's career reportedly spanned 1918 to 1953. I have located data from 1924-1951.
I have written an article on Jackman that will appear in the next edition of SABR's The National Pastime. I hope eventually to publish a full biography.
I would love to hear from anyone who may have information on Jackman or his longtime battery-mate Burlin White.