Original sentence: The number of screenplays he wrote or worked on that are now considered "classics" is, according to Chicago's Newberry Library,  "astounding," and included films such as, Scarface (1932),  The Front Page, Twentieth Century (1934), Barbary Coast (1935), Stagecoach, Some Like It Hot,  Gone with the Wind, Gunga Din, Wuthering Heights, (all 1939), His Girl Friday (1940), Spellbound (1945), Notorious (1946), Monkey Business, A Farewell to Arms (1957),  Mutiny on the Bounty (1962), and Casino Royale (posthumously, in 1967)
Edited sentence: The number of screenplays he wrote or worked on that are now considered classics is, according to Chicago's Newberry Library,  "astounding," and included films such as, Scarface (1932),  The Front Page, Twentieth Century (1934), Barbary Coast (1935), Stagecoach, Some Like It Hot,  Gone with the Wind, Gunga Din, Wuthering Heights, (all 1939), His Girl Friday (1940), Spellbound (1945), Notorious (1946), Monkey Business, A Farewell to Arms (1957),  Mutiny on the Bounty (1962), and Casino Royale (posthumously, in 1967)