By Harold Scarborough. A Russian biologist creates a serum that stops the aging process. The biologists financier intends to market it as a vaccine.

By Aldous Huxley. This is the story of a Hollywood millionaire who fears death. It is an examination of American culture—narcissism, superficiality, and the obsession with youth.

By George C. Foster. There are survivors from Atlantis—they're immortal. This is their story of experiencing the world's history.

By George S. Viereck and Paul Eldridge. Paul Eldridge. The Autobiography of the Wandering Jew. This novel provides portraits of historical and religious figures and intertwines social commentaries, philosophic observations, and history and science-based episodes.

By Robert A. Heinlein. Part of the Future History series and the first introduction of the character Lazarus Long. The Howard families have achieved long lifespans through selective breeding, and financial wealth.

By Chester S. Geier. A scientist discovers he is immortal and is at first happy—but then he watches his family age and die.

By Poul Anderson The novel covers a group of immortals from the ancient past to the near-future. It shows their difficulties and quest to find others like themselves and then their departure from Earth and exploration of new civilizations.

By Jack Vance. In a near utopian city lengthening someone's life is a reward the government bestows. And immortality is the highest honor, reserved for select few.

By Raymond Z. Gallun. This novel depicts a future where immortals can live in any virtual reality of their choice.

By Michael Moorcock. The protagonists go to absurd lengths to keep ennui at bay.

By Peter-F-Hamilton. A world where humans can re-life their bodies via clones with downloaded memories. There are many books in this series (three trilogies) but he has a specific stand alone that deals with the cost of 'living forever' called 'Misspent Youth'.

By Richard Morgan. Humanity can re-sleeve themeves by downloading digital copies of themselves into new flesh bodies. An interesting and exciting mix of cyberpunk and immortality SF with noir detective fiction thrown in. Exciting, violent, and addictive.