Below is a partial list of writing influences and sources for concepts from the stories that are not mentioned in the stories themselves (e.g. Lovecraft is not listed below, because he is referenced in the stories).

Fiction books
We the Living by Ayn Rand
The Fountainhead by Ayn Rand
The House of the Scorpion by Nancy Farmer
Gone with the Wind by Margaret Mitchell
Martin Eden by Jack London
Animal Farm by George Orwell
Little Brother by Cory Doctorow
Harry Potter and the Deathly Hallows by J.K. Rowling
Invitation to the Game by Monica Hughes

Non-fiction books
Elon Musk: Tesla, SpaceX, and the Quest for a Fantastic Future by Ashlee Vance
Zero to One: Notes on Startups, or How to Build the Future by Peter Thiel
Basic Writings of Nietzsche, edited by Walter Kaufman
God's Philosophers: How the Medieval World Laid the Foundations of Modern Science by James Hannam
The Beginnings of Western Science: The European Scientific Tradition in Philosophical, Religious, and Institutional Context, Prehistory to A.D. 1450 by David Lindberg

Movies/TV shows
Fight Club
Terror in Resonance

Articles/blogs
“No Death, No Taxes” in The New Yorker (November 2011)
“A Dying Young Woman’s Hope in Cryonics and a Future” in The New York Times (September 2015)
Various articles and blog posts on Christian transhumanism by Micah Redding
Various short stories and blog posts at Slate Star Codex