Just to nail down further the team which Bill Glowacki joined in 1929 after leaving Martinsburg, and then going home apparently to sulk a while, was the Elysburg, Pennsylvania team. I guessed earlier that it was some kind of semi-pro team. With further research, I've learned that it was in the Susquehanna League, which was an Independent pro league. The following source shows that Elysburg entered that league in 1928:
https://baseball.fandom.com/wiki/Susquahanna_League
Elysburg is located about 10 miles from Bill Glowacki's home town of Shamokin.