33 vintage photos show how Americans used to spend their summers

Americans enjoyed barbecues in the 20th century. Harold M. Lambert/Getty Images Traditions like going to the beach, summer camps, and sports have long been part of American life. Some parts of summer, like how people used to cool off, have changed with modern technology. Summer destinations like Coney Island are still popular today. Although air conditioning and modern swimsuit styles are relatively recent developments, some things about summer in America haven't changed much. Summer tradit...