One really valuable source might be the huge collection of Classic
Commericials from the 50's and 60's--there are well over 60 volumes of
this series...they're available from Movies Unlimited and from
Video Resources (commercials, TV nostalgia)
220 W. 71st St.
New York, NY 10023
(212) 724-7055
Fax: (212) 595-0819
Good luck!
Gary Handman
Director
Media Resources Center
Moffitt Library
UC Berkeley, CA 94720-6000
510-643-8566
ghandman@library.berkeley.edu