Possible Clues:

• "A Loss of Roses" writer
• ''Splendor in the Grass'' Oscar winner William
• He wrote more than one play that is inwardly no good
• "Picnic" Pulitzer playwright
• ''Playwright of the Midwest''
• ''Good Luck, Miss Wyckoff'' writer
• Dramatist who wrote ''Picnic''
• "The Dark at the Top of the Stairs" playwright
• Pulitzer Prize dramatist of '53
• ''Picnic'' Pulitzer-winner William