With the permission of John Chambers, I'm sharing a scan of "S - A Language and System for Data Analysis" by Richard Becker and John Chambers, January 1981.

Enjoy:  https://drive.google.com/drive/folders/14ijVPw1DihydXFqTzj-wgl3C5LYEJdKX?usp=sharing

I was pleased to learn that the first port of S to UNIX was on the Interdata 8/32, which I had my part in enabling.