When I saw this book, I couldn't resist buying it. It's from 1907 and the title is "Die fromme Helene" ("Helen who couldn't help it"). The text (in German) is written in verses that rhyme. The text is printed in Fraktur and not easy to read, even is you understand German language.
Die fromme Helene is one of the most famous comics of Wilhelm Busch. The story mocks the hypocrisy of the Catholic Church and it's dubious morality.
The English Wikipedia page shows a translated fragment and some more information on this book.
Wilhelm Busch Museum