We have found a Web site, www.mediafinder.com/ and www.ulrichsweb.com,
which both contain a database of extensive information on US and
Canadian Periodicals and Publications.  This site can be searched by a
variety of methods,including industry type, geographical location,
etc.   We are looking
for alternative Web sites that contain the same type of information.
The database would include contact information, editors names,
physical addresses, e-mails, and Web site information.  Ideally, these
publications would also accept press releases.

NewsDirectory.com is a fairly extensive database that includes
periodicals from most of the world in addition to North America.  Also
Gebbie Press's site (www.gebbieinc.com) is also quite large, but there
is very little scholarly material.  It's mostly popular multimedia
stuff.  One valuable resource I've used before is
www.markovits.com/journalism/  It's a quick reference guide for
journalists and educators, as well as scholars.  You might also want
to take a look at Plattsburgh.edu (mostly Canadian, some U.S.), and
www.highbeam.com (they claim to have a database of over 30 million
entries, from thousands of publications).  Finally, I would suggest
searching some sites from major universities and research institutions
that spring to mind (you might have already thought of this).  Often
their libraries publish huge databases, often subject-specific, of
just about every periodical that has ever been conceived.  Hope this
helps.

Galactic Ployglot