All good recs so far. Here's a few I haven't seen mentioned yet - Computing in the Middle Ages: A View From the Trenches 1955-1983 - Severo Ornstein Early Bri

All good recs so far. Here's a few I haven't seen mentioned yet - Computing in the Middle Ages: A View From the Trenches 1955-1983 - Severo Ornstein Early British Computers - Simon Lavington Geeks Bearing Gifts - Ted Nelson (and also Computer Lib/Dream Machines) more recently - UNIX: A History and a Memoir by Brian Kernighan