Volume 31 - The Secret Of Wildcat Swamp - Major Format Types
Hardy Boys Cover Art Hardy Boys Cover Art
#YearsTextCoverSpineArtEPs
A1951-58OriginalTanWrapGilliesOrange Gretta
B1959-62    Brown multi scene
C1962-68 PCBlue  
D1969-79revised  NappiWhite multi scene
E1979-87    Cameo
F1987-Date Flashlight PC  Blank
Major Variants
1959 - off-center cut, dark brown multi scene endpapers

All Editions For Sale