Non-fiction

The Immortalist Alan Harrington

Conquest of Death Alvin Silverstein

Merchants of Immortality S J Hall

Ageless Quest L & L Guarente

Cells, Aging, and Human Disease Michael Fossel

Reversing Human Aging Michael Fossel

Fiction

Methuselah's Children Robert Heinlein

Time Enough For Love Robert Heinlein

Eternity Mack Reynolds (with Dean Ing)

Buying Time (a.k.a.The Long Habit of Living) Joe Haldeman

The Magicians James Gunn

This Immortal Roger Zelazny

Isle of the Dead Roger Zelazny

Rewind Terry England

Strangers D R Koontz

Spin Doc (no link available) & The Forever Drug Steve Perry

Immune Response Steve Perry

The Immortality Gene Alexander Kaplan

Dune (and its sequels) Frank Herbert

The Cassandra Complex (and the associated sequels) Brian Stableford