Public Domain
I believe all these images are in the public domain, and most do not require attribution. I'm sharing the sources, for others who are interested in similar images. These links should help you get started in finding more of your own.
Experimental Science by George M. Hopkins, Copyright 1889 by Munn & CO. p. 284, Figure 296. Published 1890. There are no known copyright restrictions in the United States on the use of the texts. (I own the book, but I chose to use the high-quality scans already available.) Edited to improve contrast.
British Library digitised image from page 64 of "Sing-Song. A nursery rhyme book With illustrations by A. Hughes, etc" Published 1893. No known copyright restrictions. Edited to improve contrast, and mirrored (except for the numbers) for nicer layout on the left of the page.
The First Primary Reader: With Engravings from Original Designs by George Stillman Hillard (Page 16 of the digital file; page 10 of the printed text.) Published 1859. "NOT_IN_COPYRIGHT". Edited to improve contrast, and mirrored for nicer layout on the left of the page. (A non-mirrored version of the same image appears on the right as well.)
NASA image of Apollo 15: James Irwin saluting the flag, together with the lunar rover. Cropped to make a "landscape" aspect ratio. Further edits shown and descried on the TALL Images page. Also available at the Apollo 15 Map and Image Library within the Apollo Lunar Surface Journal.
Wright Brothers' First Flight on Dec. 17, 1903. Linked here from NASA, but many public-domain sources are available.
On the How to Study Page:
British Library digitised image from page 17 of "[Deux mères.] Uncle Chesterton's Heir ... Translated by Henry Frith. With illustrations" (1884) No known copyright restrictions. Edited to improve contrast.
Image from page 28 of "The adventures of Prince Prigio and of his son, Prince Ricardo" Published 1900. No known copyright restrictions. Edited to improve contrast, and a border was removed.
On the How to Write Page:
British Library digitised image from page 21 of "The Child's own Poetry Book. Written and arranged by H. G. G. With ... illustrations" Published 1887. No known copyright restrictions. Edited to improve contrast.
Image from page 35 of "McGuffey's third eclectic reader", this edition Published 1920 - so now in the public domain. Cropped from the full page, and edited to improve contrast.
On the How to Read Page:
Image from page 823 of "The Ladies' home journal" Published 1889. No known copyright restrictions. Edited to improve contrast.
British Library digitised image from page 159 of "The Baby's Museum; or, Rhymes, jingles and ditties, newly arranged by Uncle Charlie" Published 1882. No known copyright restrictions. Edited to improve contrast.
Image from page 397 of "Class book of poetry: consisting of selections from distinguished English and American poets, from Chaucer to Tennyson. The whole arranged in chronological order, with biographical and critical remarks" Published 1875. No known copyright restrictions. Edited to improve contrast.
Image from page 492 of "St. Nicholas [serial]" Published 1873. No known copyright restrictions. Edited to improve contrast.
Image from page 189 of "The Century illustrated monthly magazine" Published 1890. No known copyright restrictions. Cropped from the full page of advertisements, edited to improve contrast, mirrored the image of the woman, and two images moved closer together.
On the How to Talk Page:
Image from page 148 of "When life is young; a collection of verse for boys and girls" Published 1894. "visible notice of copyright; stated date is 1894" - so now in the public domain. Edited to improve contrast.
On the Physics of Fuel Efficiency Page:
Image from page 88 of "Drawing made easy: a helpful book for young artists; the way to begin and finish your sketches, clearly shown step by step" "Title" Published 1921. Public domain. Trimmed a portion of the image, increased contrast.
LinkNational Air Races Photo by Luck Luqueer Catalog #: 10_0014053, San Diego Air and Space Museum Archive. No known copyright restrictions. Trimmed a portion of the image, edited out everything but the car, increased contrast.
British Library digitised image from page 108 of "The United States of America. A study of the American Commonwealth, its natural resources, people, industries, manufactures, commerce, and its work in literature, science, education and self-government [By various authors.] Edited by N. S. Shaler ... With many illustrations" Published 1894. No known copyright restrictions. Edited to improve contrast, rotated, and trimmed.
1923 advertisement for Packard Single Six, From the 22 November 1923 edition of Hawaiian newspaper Hilo Tribune-Herald. Public Domain. Trimmed from full image, edited to improve contrast. A mirrored version was also made.
Page 9 from 1931 Packard Standard Eight Brochure. Given its age and the small use I made, I believe this is fair use. (Or, if copyright was not renewed within the first 28 years, then it is now public domain.) Edited to trim a portion of the image, increase contrast.
Page 4 from 1922 Duesenberg Model A Catalogue. This is a faithful reproduction of an image greater than 95 years old, and should therefore be public domain in the U.S. Edited to trim a portion of the image, increase contrast.
Page 12 from 1911 Ford Full Line brochure. This is a faithful reproduction of an image greater than 95 years old, and should therefore be public domain in the U.S. Edited to trim a portion of the image, increase contrast.
Created By Us
On the Physics of Fuel Efficiency Page:
My average fuel efficiency for a few years, both before and after changing driving habits.
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
You are free to:
• Share — copy and redistribute the material in any medium or format
• Adapt — remix, transform, and build upon the material
The licensor cannot revoke these freedoms as long as you follow the license terms.
Under the following terms:
• Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
• NonCommercial — You may not use the material for commercial purposes.
• ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.