1. Search for fan clubs devoted to the person you're looking for.
2. Contact a musician by looking for a contact address in a CD or cassette booklet or looking up the address of the record company that released the recording.
3. Contact a screen actor or actress through the Screen Actors Guild.
4. Contact a director through the Directors Guild of America.
5. Contact a stage actor or actress through the theater at which he or she is currently performing or has recently performed.
6. Contact a television or radio personality in care of the station or network that he or she works for.
7. Contact authors and literary editors through the National Writers Union or through their publishers.
8. Contact a famous athlete in care of his or her team.
9. Contact an artist through a gallery or museum that houses his or her work.

via ehow