Overview and reference
This page contains links to MTS reference material.
In 1975, Don Boettner and Mike Alexander wrote an overview paper on MTS which was published by IEEE (5MB PDF).
The 360/67 programmer's reference card was a useful tool for the MTS developers (13.5MB PDF).
If, in an excess of nostalgic enthusiasm, you ever dig up a copy of the original MTS Distribution 1 tapes, you'll need this list of the tape contents (2.4MB PDF).