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Poul Anderson
The Story of Alchemy and the Beginnings of Chemistry
M. M. Pattison Muir
The Fairyland of Science
Arabella Buckley
Gulliver of Mars
Edwin L. Arnold
On the Nature of Things
Titus Lucretius Carus
Looking Backward: 2000-1887
Edward Bellamy
Lone Star Planet
H. Beam Piper and John J. McGuire
Edison's Conquest of Mars
Garrett P. Serviss
The Bird Study Book
Thomas Gilbert Pearson
Easy Lessons in Einstein
Edwin E. Slosson
Starman's Quest
Robert Silverberg
Storm Over Warlock
Andre Norton