This book, "Military observation balloons captive and free a complete treatise on their manufacture, equipment, inspection, and handling, with special instructions for the training of a field balloon company. 2", by Emil Joseph Widmer, is a replication of a book originally published before 1917. 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.