1 Introduction
2 Definitions
3 Red-Shifts Produced by a Time-Dependent Distance or Metric of Space
4 Red-Shifts Produced by a Time-Dependent Property of Gravity
5 Red-Shifts Produced by a Time-Dependent Property of Matter
6 Red-Shifts Produced by a Time-Dependent Property of Light or an Interaction of Light with Itself
7 Red-Shifts Produced by a Time-Independent Geometry of Space and Time
8 Red-Shifts Produced by a Time-Independent Property of a Field, Gravitational or Other
9 Red-Shifts Produced by an Interaction Between Light and Matter
10 Conclusions