SPECULATIVE NONFICTION: a very, very incomplete bibliography.

Jeff Harris provides a list of SpecNonFic:

HG Wells, Anticipations of the Reaction of Mechanical and Scientific Progress upon Human Life and Thought  (coll of linked essays April-December 1901 Fortnightly Review; dated 1902 but 1901)

JD Bernal, The World, the Flesh and the Devil: An enquiry into the future of the three enemies of the rational soul (1929; 1969)

Michael Young, The Rise of the Meritocracy 1870-2033: An Essay on Education and Equality (1958)

IJ Good (ed), The Scientist Speculates: An anthology of partly-baked ideas (1962)

Arthur C Clarke, Profiles of the Future: Enquiry into the Limits of the Possible (1962)

Stanislaw Lem, Summa Technologicae (1964, 1974: 2012)

Nigel Calder (ed), The World in 1984, volumes one and two (1965)

Dr A R Martin, Project Daedalus: JBIS Supplement (1978)

Ed Regis, The Great Chicken Mambo and the Transhuman Condition:Science slightly over the edge (1990)

Damien Broderick, The Spike: Accelerating into the Unimaginable Future (1997; 2n ed. 2001)

David E H Jones, The Further Inventions of Daedalus: A Compendium of Plausible Schemes (1999)

Stephen Baxter, The Science of Avatar (2012)

Conway, J., C. M. Kosemen, & D Naish, All Yesterdays: Unique and Speculative Views of Dinosaurs and Other Prehistoric Animals. (Irregular Books, 2012)

Enrico Rodrigo, The Physics of Stargates: Parallel Universes, Time Travel, and the Enigma of Wormhole Physics (2010)

Lewis Dartnell, The Knowledge: How to Rebuild Our World from Scratch (2014)

Charles Adler, Wizards, Aliens and Starships: Physics and Math in Science Fiction and Fantasy (2014)
Rutger Bregman, Utopia for Realists: And How We Can get There (2017