As a child, as I think my family knows, we had but a few books in the house. Maybe ten. These included the Pope approved Catholic bible (the heretical St. James version was a sin to possess), a few children’s “Golden Books” and the Cub Scout and Boy Scout Handbooks. Maybe a Nancy Drew or two. We did not read much. Mostly we were expected to “do” things.
Then one day in the early 1950s my dad came home with a thirty-two volume, 1933-ish issue of the Encyclopedia Britannica. My jaw dropped. Best, it was put in a custom bookcase in the hall immediately outside my bedroom. At the top of the stairs from the first floor. I spent much of my childhood reading it as I got interested in different things.
I recall each volume was about a thousand pages and weighed five pounds. At the same time I also consumed numerous books related to science or electricity. When Melinda and I wed, I learned for the first time that many people read in bed. For fun, not just to educate themselves. For a while I thought it weird. But it began a new era for this kid.
Childhood

Encyclopedia Brittanica (1933 Edition)
Golden Book of Science (1956) – the one that I think shaped my life.
The Stars – H. A. Rey – ditto, the shaping.
Midsummer Nights Dream – magical to me; got to see the play at the Cleveland Playhouse Theater
Great Expectations – something about it struck me as having been there.
Huckleberry Finn – Just drew me in.
Adulthood (in order of wonder)
Leslie C. Peltier – Starlight Nights
Richard Feynman – What Do You Care What Other People Think? (and the rest of his collection)
George Smoot – Wrinkles in Time
James Lee Burke – The Dave Robicheaux books
James Crockett – The Victory Garden
Oops, I have twelve…
Arthur Conan Doyle – Sherlock, of course
Richard Rhodes – The Making of the Atomic Bomb
Honorable Mentions
Anything by Ian Rankin, Timothy Ferris, Dava Sobel, plus Krakatoa: The Day the World
Exploded – by Simon Winchester, and The Principia by good ole I. Newton
The “book” I’d want on a desert island is ‘the EB.’ The first mentioned above.
Cheers.