I nominate
Tales From the Jazz Age by F.Scott Fitzgerald:
"
Tales of the Jazz Age (1922) was Fitzgerald's second collection of short stories, and it contains some of the best examples of his talent as a writer of short fiction. Often overshadowed by his major novels, Fitzgerald's short stories demonstrate the same originality and inventive range, as he chronicles with wry and astute observation the temper of the hedonistic 1920s. In 'May Day' and 'The Diamond as Big as the Ritz', two of his greatest stories, he conjures up the spirit of the age; in other stories he adopts a variety of forms - parody, a one-act play, fantasy - with unrivalled versatility. 'The Curious Case of Benjamin Button', a tale of a man living his life backwards, features among the 'Fantasies"
It is in the public domain and available from Project Gutenberg as well as in many ebook anthologies for a very moderate price.
It is also here in the mobile read library:
https://www.mobileread.com/forums/showthread.php?t=21788