Volume 29 - The Secret Of The Lost Tunnel - Major Edition Types
Hardy Boys Cover Art Hardy Boys Cover Art
#YearsTextCoverSpineArtEPs
A1950OriginalBrownWrapGilliesOrange Gretta
B1951-58 Tan   
C1958-62    Brown multi scene
D1962-68 PCBlue  
E1968-79revised  NappiWhite multi scene
F1979-87    Cameo
G1987-Date Flashlight PC  Blank
Major Variants
1964 - blank endpapers

All Editions For Sale