Fat Freddy`s Kater (Zweitausendeins 1978) (German Underground)

Feds and Heads - Netherland Printing (Paranoia 1971) (Netherland Printing)

Freak Flyer, The (Knockabout Comics 1988) (UK Underground Newspaper)

Fritz the Cat in Fritz haut ab (Pirate edition / without publisher, without year) (German Underground)

Fritz the Cat R. Crumb´s (Brumm 1972 / Zweitausendeins Verlag 1975 / Heyne 1984 / Reprodukt 1999) (German Underground)

Fritz the Cat 1 - R. Crumb´s (Pirate edition / without publisher, without year) (German Underground)

Fritz the Cat 2 - R. Crumb´s (Pirate edition / without publisher, without year) (German Underground)

Fritz the Cat No. 2 (sequel to Heavy-Duty Comics #1 - Fritz Bugs Out) (Pub. by J.J.Flash, printed by Moss Side Press) (U.K. bootleg Underground / 20p)