a. DISC AIRCRAFT OF THE THIRD REICH (1922-1945 and Beyond)
e. ANNULAR AIRCRAFT PROJECTS
f. CIRCULAR-WING AIRCRAFT PROJECTS
g. AXIS CO-OPERATION DISCS
i. FORMER AXIS POSTWAR CO-OPERATION DISCS
j. GERMAN AERIAL ODDITIES
l. UNKNOWN LUFTWAFFE 1946 TYPES
m. JAPANESE INFLUENCED SECRET AIRCRAFT
n. FICTIONAL HYPOTHETICAL DISC/VTOL AIRCRAFT
o. FICTIONAL HYPOTHETICAL LUFTWAFFE 1946 TYPES
q. LUFTWAFFE 1946 TYPE HOAXES
r. HUMOROUS FICTIONAL HYPOTHETICALS
s. WORLD DISC DEVELOPMENT