Back in 2012 I published an article in Black Ball (Volume 5, Number 2 / Fall 2012)* about a Chippewa Indian named Bill Cadreau who pitched one game for the Chicago White Sox at the end of the 1910 season (under the name “Chief Chouneau”), then appeared for the Chicago Union Giants seven years later, in 1917. This made him, as far as I know, the only non-Cuban ballplayer between Fleet Walker and Jackie Robinson to play for both a major league team and an avowedly all-black professional club. (In this post I checked out, but could not substantiate, the claim that Walter Johnson, of all people, also bridged this gap.)
Anyway, one consequence of the investigation into Brian Campf’s panoramic photograph of the 1911 Chicago Union Giants is that I found this item:
So Bill Cadreau actually pitched for the Union Giants much earlier than 1917, in fact just the year after his cup of coffee in the majors. In my original research I had found a game where he pitched against the Union Giants in 1911, but did not realize he had pitched for them that year. As it turns out, he was with the team within a week of Brian’s photo being taken. Here’s the box score for one of his games with the Unions, played in Escanaba, Michigan, on August 29:
*--The article in Black Ball was itself based on an earlier article I wrote for the Outsider Baseball Bulletin in 2010.