Canopus in Argos: Archives is a sequence of five science fiction novels by Nobel laureate author Doris Lessing, which portray a number of societies at different stages of development, over a great period of time. The focus is on accelerated evolution guided by advanced species for less advanced species and societies.

The Marriages Between Zones Three, Four and Five is a 1980 science fiction novel by Doris Lessing. It is the second book in her five-book Canopus in Argos series, the first being Shikasta (1979). It was first published in the United States in March 1980 by Alfred A. Knopf, and in the United Kingdom in May 1980 by Jonathan Cape.