This book explores a wide variety of online information sources and achieves coherence by documenting and interpreting the history of a particular extended American family on the basis of 9 decades of movies and videos, 17 decades of photographs, and centuries of documents. Starting now, any family may begin to preserve their current experiences for the historians of the future, but this will require social as well as technical innovations. This book is the essential resource, providing the fundamental principles, effective methods, and fascinating questions required to make our past live again.