Oakland A's 2019 Community Prospect List #25: Jonah Heim pops onto the radar - Athletics Nation
Oakland Athletics 2019 Top 50 Prospects
Oakland A's 2020 Community Prospect List #10: Jonah Heim upgrades from sleeper to 40-man roster - Athletics Nation
Oakland A's 2021 spring training: Backup catcher competition heating up - Athletics Nation
MORE
Oakland Athletics 2019 Top 50 Prospects
Oakland A's 2020 Community Prospect List: The final Top 30 list! - Athletics Nation
Predicting Every MLB Team's 2023 Opening Day Lineup, News, Scores, Highlights, Stats, and Rumors
2000 The Peru Stater (Nebraska) by Peru State College Library - Issuu
Barstool Baseball
Misc. Baseball Wantlist
Predicting Every MLB Team's 2023 Opening Day Lineup, News, Scores, Highlights, Stats, and Rumors
2000 The Peru Stater (Nebraska) by Peru State College Library - Issuu
Athletics Top Prospects