1968 Topps Jim Northrup

Willie Stargell and Willie Horton 1970 cards deemed perfect - Sports Collectors Digest

Lest we forget: Jim Northrup, Jose Pagan, Paul Splitorff

554 Jim Northrup SP - 1966 Topps Baseball Cards (Star) Graded PSA AUTO

1968 Topps # 78 A Jim Northrup Detroit Tigers (Baseball Card) (Back is Gold in Color) VG/EX Tigers : Collectibles & Fine Art

#554 Jim Northrup SP - 1966 Topps Baseball Cards (Star) Graded PSA AUTO

1967 Topps 6th Series - Forums

1972 Topps #408 Jim Northrup VG Detroit Tigers - Under the Radar Sports

1968 Topps Baseball Checklist, Set Details, Key Cards, Variations

1968 Topps Baseball Cards Set checklist, prices, values & information