in 1968, pyramid books published an extended novel adaptation of the pilot ("land of the giants", pyramid books, x-1846), written by famed author murray leinster. among notable changes or inventions is that the spindrift is still an operational, flying ship after the initial crash, with enough "atomic power" to last as much as several months. another invention for the novel is the knowledge that two other ships, the "anne" and "marintha", disappeared via the same mysterious phenomenon that sends the "spindrift" to the giants' planet. the "spindrift" castaways encounter a female survivor of the "anne", named marjorie, who joins the castaways in this novel. although the television series featured three episodes with other on-screen survivors from previously lost earth-flights, the novel's character marjorie and the ships "anne" and "marintha" do not appear and are not mentioned in the series.