An early children's science fiction book about spaceflight.
Borrowing from a book-seller description:
Friedrick Mader, "the German Jules Verne" according to Sam Moskowitz, was a popular author of fantastic romances in post-World War One Germany. DISTANT WORLDS is his only novel translated into English. WUNDERERWELTEN (1911) is a boys' book that "takes its spaceship crew to Mars and finally, at several times the speed of light, to Alpha Centauri, where they explore an Eden-like planet. Its content is quite advanced for 1911.' It was translated into English in 1932.
Google Books summarized it like this:
"Professor Dr. Heinrich Schulze of Germany, Captain Munchausen of Australia, and Lord Flitmore of England, together with their wives and a company of associates travel around Mars and Saturn in an anti-matter powered space ship. They follow a comet through the asteroid belt and out of the solar system to Alpha Centauri, landing on a planet of that system."
While the illustrations are not really "space art" I have also included a bit of the text so you can get a feel for the technology used.
Mader, Friedrich. Illustrated by Graef, Robert A. Translated by Shachtman, Max. Distant Worlds: The Story of a Voyage to the Planets. New York: Charles Scribner. (343 p.) 1932.