I read a biography of Perkins who was Wolfe, Fitzgerald, and Hemingway's editor. In the book there was a picture of Wolfe with his foot on these crates of pages of text that he had sent to Perkins. It was unreal how much text Wolfe wrote that had to be boiled down to something publishable. "Look Homeward, Angel" was a three-crate book.
The reason Scribner got Wolfe in their stable was that only the indefatiguable Perkins had the patience to edit Wolfe, who would act as if his arm had been severed with every paragraph that Perkins cut.