Before the NBA G League, there was the Eastern Professional Basketball League. It was a northeast league stocked to the brim with great players like John Chaney, Stan Pawlak, Jim Boeheim, and Hal Lear, with many of the teams calling Eastern Pennsylvania home. The league featured larger than life characters on and off the court, and the stories from the Eastern League are absolutely wild. Syl Sobel and Jay Rosenstein interviewed players, coaches, and personalities from the Eastern League to write "Boxed Out of the NBA: Remembering the Eastern Professional Basketball League." 

Check out the book here: https://www.easternleaguebook.com/