Psychology (1st edition)
Rose M. Spielman, Kathryn Dumper, William Jenkins, Arlene Lacombe, Marilyn Lovett, Marion Perlmutter (OpenStax), 2014
CC BY 4.0 Older edition, still CC BY: free to send with attribution. The newer 2e is non-commercial.
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Rose M. Spielman, Kathryn Dumper, William Jenkins, Arlene Lacombe, Marilyn Lovett, Marion Perlmutter (OpenStax), 2014
CC BY 4.0 Older edition, still CC BY: free to send with attribution. The newer 2e is non-commercial.
Rose M. Spielman, William J. Jenkins, Marilyn D. Lovett et al. (OpenStax), 2020
CC BY-NC-SA 4.0 Non-commercial use only: link, do not resend.
Jessica Motherwell McFarlane, Amelia Liangzi Shi, Dinesh Ramoo, Tareq Yousef (BCcampus), 2024
CC BY-NC-SA 4.0 Non-commercial use only: link, do not resend.
Noba Project, Diener Education Fund (many module authors), 2026
CC BY-NC-SA 4.0 Non-commercial use only, and Noba's own terms apply: link, do not resend.
SIOP Getting I-O into Intro Textbooks task force (Joe Allen, Talya Bauer, Jason Dahling et al.), 2020
CC BY 4.0 A single chapter, not a full book; free to send with credit to SIOP.
Edward Bradford Titchener, 1915
Public domain Public domain (Project Gutenberg): free to send.
Hermann Ebbinghaus, 1908
Public domain Public domain in the USA; translator died 1967, so outside the US check local law.