The crossword solution for the term 'Sandra of 'A Summer Place'' is Dee, which is a three-letter word. Dee was the character played by Sandra Dee in the 1959 romantic drama film 'A Summer Place'. The film follows two teenage lovers from different social classes who are forced to separate when their parents disapprove of their relationship. Sandra Dee was an American actress who was known for her roles in films such as 'Gidget' and 'Tammy and the Bachelor'.