"The Lost Generation is a term used to describe those who came of age during World War I. This term more specifically refers to a group of American writers whose works were published after that period. The term Lost Generation comes from a comment that Modernist writer Gertrude Stein made to author Ernest Hemingway—that Hemingway and his cohorts were "all a lost generation. ... The Lost Generation rebelled against post-World War I American ideals. During that time American culture valued a work ethic of capitalism and entrepreneurship. Members of the Lost Generation, however, felt the United States lacked culture and sophistication." (""The Lost Generation." Gale Student Resources in Context, Gale, 2011. )
"In literature, the "Lost Generation" refers to a group of writers and poets who were men and women of this period. All were American, but several members emigrated to Europe. The most famous members were Gertrude Stein, Ernest Hemingway, F. Scott Fitzgerald, and T. S. Eliot." https://writersinspire.org/content/lost-generation
An overview of the American writers who were coined the Lost Generation via Encyclopedia Britannica.
A comprehensive definition on the term "Lost Generation" via Credo.
Information on literary themes and notable members of the Lost Generation writers via Wikipedia.
Available via Jstor, argues that Hemingway later on in his career tried to disassociate from Gertrude Stein's notion of what she thought the Lost Generation represented.
Available via Jstor, article published in 1933 from a first person point of view of the Lost Generation writers.
Many of the Lost Generation shared these similar characteristics that carried over to their fictional characters in their stories:
3 minute video that explains the story of the writers who came of age during World War One, commonly referred to as The Lost Generation.