Imperial Earth (1975) is a saga about the colonization of the solar system. The thematic determinants of the novel are determined by extrapolations of scientific hypotheses related to interplanetary travel, and by the SETI program.
The third book in the Time of Legends series begins the epic tale of the Sundering. Malekith triggers a tragic sequence of events that plunges the realm of the elves into a civil war from which they will never recover.