Letters from interesting people (10)
I believe the answer is:
characters
This clue is a double definition.
'letters' is the first definition.
'interesting people' is the second definition.
(character can mean an interesting person)
'from' acts as a link.
(Other definitions for characters that I've seen before include "eccentric people?" , "Persons in a play/book" , "Eccentrics" , "Roles; letters" , "Signs" .)