Anton York, Immortal, by Eando Binder (epub/Kindle/pdf)
Anton York is a man of tomorrow. He has discovered the secret of voluntary suspended animation and requires no food or air. He can live where he pleases, when he pleases, for as long as he wants. Somewhere in the dim future ages, this man-made God must die. But how?
A classic of science fiction by the author of ADAM LINK, ROBOT!