Question: Where was the movie the summer of 42 filmed?

context: No context provided
question: Where was the location movie summer of 42 filmed?
short_answers: Mendocino, California
context: Nantucket Island was too far modernized in 1970 to be convincingly transformed to resemble an early 1940s resort, so production was taken to Mendocino, California, on the West Coast of the US. Shooting took place over eight weeks, during which O'Neill was sequestered from the three boys cast as "The Terrible Trio," in order to ensure that they did not become close and ruin the sense of awkwardness and distance that their characters felt towards Dorothy. Production ran smoothly, finishing on schedule.
question: Where was the coast the movie summer of 42 filmed?
short_answers: West Coast of the US

Answer: Summer of '42 is a 1971 American coming-of-age film based on the memoirs of screenwriter Herman "Hermie" Raucher. It tells the story of how Raucher, in his early teens on his 1942 summer vacation on Nantucket Island (off the coast of Cape Cod), embarks on a one-sided romance with a young woman, Dorothy, whose husband has gone off to fight in World War II. Nantucket Island was too far modernized in 1970 to be convincingly transformed to resemble an early 1940s resort, so production was taken to Mendocino, California, on the West Coast of the US.