While not as groundbreaking as the Xerox work I'd reccomend The Soul of the New Machine of you liked Dealers of Lightning.

Where Wizards Stay Up Late: The Origins Of The Internet

The Idea Factory: Bell Labs and the Great Age of American Innovation

The Chip: How Two Americans Invented the Microchip and Launched a Revolution

That last one is a little dry, I still found it interesting. It's about Jack Kilby and Robert Noyce. It's currently available for sale for $1.99 on the Kindle.

The recent book by Brian Kernighan, "UNIX: A History and a Memoir" [1], was a fascinating personal memoir about the birth of Unix as well as how things used to work at AT&T Bell Labs.

[1] https://www.amazon.com/UNIX-History-Memoir-Brian-Kernighan/d...

One book frequently overlooked when it comes to computer and internet history is The Dream Machine. It tells the story of J.C.R. Licklider, who was a psychology and computer science professor, and a director at ARPA. He had the vision for the "Intergalactic Computer Network" which became the Internet, and either directed or came into contact with nearly every project that created fundamental computing technologies.

Link: https://www.amazon.com/Dream-Machine-M-Mitchell-Waldrop/dp/1...

Dealers of Lightning is an order of magnitude more interesting than any other book in the genre I've ever read (mainly because of Xerox PARC of course). But for 90's stuff, Chapman: "In Search of Stupidity: Over Twenty Years of High Tech Marketing Disasters" is fun and really good as well :)