Y Combinator is restoring one of Alan Kay's Xerox Alto machines

[Al Kossow]

On 9/27/16 8:21 AM, Al Kossow wrote:

> Also, if they have a Lyon optical mouse, they need to come up with a pad, I pointed
> them to a paper Dick wrote that shows the hexagonal pattern in enough detail to draw
> a new one.
>

http://static.googleusercontent.com/media/research.google.com/en//pubs/archive/43260.pdf

if you zoom up the picture of the pad, you can see the pattern