21st Century / Heavy Metal / National Lampoon Indicia / Colophon Publishers

1970 - 1998
Indicia / Colophon Publisher Issues Year Began Year Ended Surrogate?
Heavy Metal Communications, inc. 0 1977 -
HM Communications, Inc. 0 1977 1992 -
National Lampoon Magazine 6 1970 -
National Lampoon, Inc. 40 1970 1979 -
NL Communications, Inc. 28 1979 1990 -
The National Lampoon, Inc. 0 1976 1979 -