This is a chromolithograph from the book Topographisch-anatomischer Atlas : nach Durchschnitten an gefrornen Cadavern by Wilhelm Braune. According to the U.S. National Library of Medicine (NLM), Braune was a professor at the University of Leipzig. The book, published in Leipzig in 1872, consists of 30 color lithographs of frozen cross sections of human anatomy. The NLM detail page offers a little more information about how the plates were made: "After sections were cut, thin paper was placed over them and tracings were made of the anatomical features."
