Hi Ed,
Think I found your answer regarding Griffith's team on baseball reference:
https://www.baseball-reference.com/r...d=griffi002---
https://www.baseball-reference.com/r...gi?id=ab0d3e2b
Found a Griffith playing on this team in 1922.
The P. O. on the uniform is for Pawhuska Osages, (Pawhuska, OK) Western League.
Connection to the recent movie, Killers of the Flower Moon, which is about the Osage Nation in OK around 1920.
One of the managers for the team, Johnny Wufflie, does have ties to the PCL where many of the Frederick Fotos players originate from.
Patrick