Memory Machines will appeal to anyone who is curious about the history of computing in general and hypertext in particular. This book is highly recommended for computer science students and for students of history of science and technology, as well as for computing and engineering enthusiasts. Stephanie Wical, Online Information Review [ A] richly layered account, focusing on oral histories as much as an analysis of documents. [ ] This volume provides a sophisticated and vital history of early computing, usefully exploring conceptual ideas around hypertext, outlining the constraints on pioneering efforts to implement models of hypertext as technical prototypes, and ultimately demonstrating how these collectively shaped all subsequent efforts to develop computer-based prototypes for information structuring and retrieval. Craig Hight, Media International Australia