<P> 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 . </P>
<P> 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 . </P>
where was the film summer of 42 filmed
where was the film summer of 42 filmed
Mendocino , California , on the West Coast of the US
Mendocino , California , on the West Coast of the US