offers a special insight into the real story and action-packed life of a German-American inventive genius. The book was written by his daughter Gretchen Jane Gruber. The book was signed by the author. This book is a must, not only for fans of View-Master, but also for those who are interested in the political history of Americans German, relationships processes inventive thinking and life story of a fascinating truly man. The book contains 345 pages, with 17 pages of photos. English language.
