Between Author and Editor

Was there ever a Golden age in American Book Publishing? We suggest it was from the 1930s through World War Two into the 1950s.
Notable author-editor relationships during those years were:
Cass Canfield and Edna St. Vincent Millay;
Maxwell Perkins at Scribner's and Ring Lardner, Sherwood Anderson, Thomas Wolfe, Ernest Hemingway and F. Scott Fitzgerald;
Harold S. Latham, and James Michener and Margaret Mitchell;
Bennett Cerf and Theodor "Dr. Seuss" Geisel;
Pascal Covici and John Steinbeck.

And there were others . . .