Pittsburgh Pirates Checklist - Supercollector Catalog
Baseball Card Cameos Checklist - Supercollector Catalog
1983 Topps Al Oliver
Al Oliver Trading Cards: Values, Tracking & Hot Deals
Al Oliver Pittsburgh Pirates Baseball Sports Trading Cards
The Snorting Bull: 2021 Blake Snell Autograph Count: 1
1981–1994 – SABR's Baseball Cards Research Committee
Al Oliver Trading Cards: Values, Tracking & Hot Deals
Mariners Checklist - Supercollector Catalog
Oakland A's Price List - Supercollector Catalog
The Snorting Bull: February 2020
Al Oliver Trading Cards: Values, Tracking & Hot Deals