"What is the name of the story that consisted of a series of letters thanking a hostess for a lovely weekend, coupled with a request to return his hat? His letters go unanswered and his subsequent requests progress from terse to abusive? Very funny. Maybe it wasn't Benchley."
The Robert Benchley Society write:
We have found a Robert Benchley essay along those lines: "The Benchley-Whittier Correspondence." It may be found in the book "Love Conquers All" (1922) beginning on page 3 and in the book "Inside Benchley (1942) beginning on page 51.