Keith Olbermann’s Topps Printers’ Proofs: Cards You Can’t Have, published in the August 1985 issue of Baseball Cards Magazine, is one of the earliest in-depth looks at Topps proof cards. Beyond explaining what proofs are, it catalogs dozens of known variations and remains a fascinating snapshot of what collectors knew, and didn’t know, about this hobby niche nearly 40 years ago.
Happy collecting!
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