Volume 9 - The Great Airport Mystery - Major Format Types
#
Years
Text
Cover
Spine
Art
EPs
A
1930-32
Original
Red
White
Rogers
Blank
B
1932
 
Brown
 
 
Brown Gretta
C
1932-40
 
 
 
 
Orange Gretta
E
1941-43
 
 
Yellow
 
 
F
1944-50
 
 
 
Scott
 
G
1951-59
 
Tan
 
 
 
I
1959
 
 
 
 
Brown multi scene
J
1960-62
 
 
Wrap
Nappi
 
K
1962-65
 
PC
Blue
 
 
L
1965-71
Revised
 
 
 
White multi scene
M
1971-79
 
 
 
 
 
N
1979-87
 
 
 
 
Cameo
O
1987-Date
 
Flashlight PC
 
 
Blank
Major Variants
1962 - "$1 Box" on cover
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