Pictured below: Gary Grimes (at age 15) with Jennifer O'Neill.
The on-screen chemistry between the two contributed to this "small film" receiving four Academy Award nominations and world-wide critic acclaim. Two additional teens, Jerry Houser and Oliver Conant, also offered stellar performances. The film was based on the story from author Herman Raucher and directed by Robert Mulligan. 

Jennifer O'Neill - Dorothy

Summer of '42

Gary Grimes - Hermie

Summer of 42

Gary Grimes, Jerry Houser, and Oliver Conant

Jennifer O'Neill