Lovely found drawings from early 1900s depicting Mars. from The Project Gutenberg EBook of The Outline of Science, Vol. 1 (of 4), by J. Arthur Thomson. But would it be better in print…? I’m not sure anymore. If you think in terms of who this is available to now, the money and the resources saved. Distribution is the biggest benefit of online publishing.

1} Drawings by Prof. Lowell to accompany actual photographs of Mars showing many of the
2} canals. Taken in 1907 by Mr. E. C. Slipher of the Lowell Observatory.
3 Drawing by Prof. Lowell made January 6, 1914.
4 Drawing by Prof. Lowell made January 21, 1914.
Nos. 1 and 2 show the effect of the planet’s rotation. Nos. 3 and 4 depict quite different sections. Note the change in the polar snow-caps in the last two.