Here are the threads I found from back then—if anyone finds others, let me know!

Fixing the Ethernet Board from a Vintage Xerox Alto - https://news.ycombinator.com/item?id=15636863 - Nov 2017 (29 comments)

The Xerox Alto, Smalltalk, and Rewriting a Running GUI - https://news.ycombinator.com/item?id=15527726 - Oct 2017 (56 comments)

Inside the vintage Xerox Alto's display, a tiny lightbulb keeps it working - https://news.ycombinator.com/item?id=15472747 - Oct 2017 (50 comments)

Bitcoin mining on a vintage Xerox Alto: very slow at 1.5 hashes/second - https://news.ycombinator.com/item?id=14683326 - July 2017 (41 comments)

Improvements to the Xerox Alto Mandelbrot drop runtime from 1 hour to 9 minutes - https://news.ycombinator.com/item?id=14637763 - June 2017 (63 comments)

One-Hour Mandelbrot: Creating a Fractal on the Vintage Xerox Alto - https://news.ycombinator.com/item?id=14587915 - June 2017 (53 comments)

Xerox Alto Restoration – Ethernet pioneers/founders of 3Com visit [video] - https://news.ycombinator.com/item?id=13138977 - Dec 2016 (35 comments)

Restoring YC's Xerox Alto day 10: New boards, running programs, mouse problems - https://news.ycombinator.com/item?id=12714358 - Oct 2016 (13 comments)

Restoring YC's Xerox Alto day 9: tracing a crash through software and hardware - https://news.ycombinator.com/item?id=12685593 - Oct 2016 (27 comments)

Restoring YC's Xerox Alto day 8: it boots - https://news.ycombinator.com/item?id=12583554 - Sept 2016 (95 comments)

Restoring YC's Xerox Alto day 7: experiments with disk and Ethernet emulators - https://news.ycombinator.com/item?id=12557777 - Sept 2016 (14 comments)

YC's Xerox Alto restoration Part 7: disk exerciser trial [video] - https://news.ycombinator.com/item?id=12520795 - Sept 2016 (8 comments)

Restoring YC's Xerox Alto: how our boot disk was trashed with random data - https://news.ycombinator.com/item?id=12507361 - Sept 2016 (50 comments)

Restoring YC's Xerox Alto, Day 6: Fixed a chip, data read from disk - https://news.ycombinator.com/item?id=12482209 - Sept 2016 (31 comments)

Xerox Alto restoration day 5: Smoke and parity errors - https://news.ycombinator.com/item?id=12437018 - Sept 2016 (1 comment)

Xerox Alto Restoration Part 5 [video] - https://news.ycombinator.com/item?id=12427341 - Sept 2016 (13 comments)

Restoring Y Combinator's Xerox Alto, day 4: What's running on the system - https://news.ycombinator.com/item?id=12197591 - July 2016 (35 comments)

Restoring Y Combinator's Xerox Alto, day 3: Inside the disk drive - https://news.ycombinator.com/item?id=12072827 - July 2016 (21 comments)

Xerox Alto Restoration Part 3: drive ok and First boot attempt [video] - https://news.ycombinator.com/item?id=12035108 - July 2016 (20 comments)

Restoring Y Combinator's Xerox Alto, day 2: Repairing the display - https://news.ycombinator.com/item?id=12017354 - July 2016 (38 comments)

“Hello world” in the BCPL language on the Xerox Alto simulator - https://news.ycombinator.com/item?id=11987324 - June 2016 (59 comments)

Xerox Alto Restoration Part 2: Firing up the monitor [video] - https://news.ycombinator.com/item?id=11977215 - June 2016 (24 comments)

Restoring YC's Xerox Alto, day 1: Power supplies and disk interface - https://news.ycombinator.com/item?id=11954920 - June 2016 (23 comments)

Y Combinator's Xerox Alto: restoring the legendary 1970s GUI computer - https://news.ycombinator.com/item?id=11929396 - June 2016 (105 comments)