Pennsylvania's participation in the World war, 1917-1918 This book, "Pennsylvania's participation in the World war, 1917-1918", by Pennsylvania War History Commission, is a replication of a book originally published before 1919. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.