Who do I contact, and at what address, to request permission to
reprint a 1980 Calvin Klein ad featuring actress Brooke Shields?  The
ad was part of a Calvin Klein campaign called "The Feminist."

Perhaps, you might want to contact the company's advertising
department.  I imagine they can tell you who their advertising agency
was in 1980.

Calvin Klein, Inc.
Advertising Department
725 5th Avenue
New York, NY 10022
phone: 212.759.8888
fax: 212.319.6628

Hope that helps.