Letterman sweaters, or also known as varsity jackets, were worn by many highschool or college athletes during the 1930s. These jackets were awarded based on the athletes accomplishments or whether they were a team captian, ect. The "letter" on the jacket is earned as a reward, not just given.
1940s or 1950s, beautiful African-American girls at the beach...this would be during segragation so i'm not sure if this was in the United States or not...no more info was given about the photo :( but good lord, they are gorgeous with their confident smiles and beautiful retro-pinup style 1940s bathing suits. i love this photo