The Massachusetts Institute of Technology's Laboratory for Computer Science (LCS) has been responsible for some of the most significant technological achievements of the past few decades. Much of the hardware and software driving the information revolution has been, and continues to be, created at LCS. Anyone who sends and receives e-mail, communicates with colleagues through a LAN, surfs the Web or makes decisions using a spreadsheet is benefitting from the creativity of LCS members. LCS is an interdepartmental laboratory that brings together faculty, researchers and students in a broad programme of study, research and experimentation. Their principal goal is to pursue innovations in information technology that will improve people's lives. LCS members have been instrumental in the development of ARPAnet, the Internet, the Web, Ethernet, time-shared computers, UNIX, RSA encryption, the X Windows system, NuBus and many other technologies. This book, published in celebration of LCS's 35th anniversary, chronicles its history, achievements and continued importance to computer science. The essays are complemented by historical photographs.