To find some historical information
about women in the media you
might try Susan Douglas's book,
Where The Girls Are
- this is a look at mass media,
including TV, magazines, etc...
with a focus on the 50s and
the 60s, the latter which was
Back in the 20s there was
a media magnet named Mrs. Frank
Leslie, who was referred to
as the Queen of Publishing Row.
Reading about her would probably
reveal information about women
and the media from that era.
And for more recent information
you should reference the work
of Gail Dines and Jean Kilbourne
(the author of Killing
Us Softly - about women
and the media). I hope those
suggestions help - good luck
with your research.