Also, the computer history museum has a listing, so someone might be interested 
in getting the original code running on an emulator:

http://www.computerhistory.org/collections/catalog/102726903

> On May 26, 2018, at 10:00 AM, [email protected] wrote:
> 
> I don't know if any source is still available, but for a long time I've been 
> fascinated by Ivan Sutherland's Sketchpad running on the TX-2:
> https://www.youtube.com/watch?v=USyoT_Ha_bA
> 
> Since Sutherland's technical report is also on the web 
> (https://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-574.html) I reckon it would 
> make for a great 3rd-year Computer Science graphics assignment, to replicate 
> Sketchpad using a high level language. A look through the report shows the 
> use of rings, linked lists, recursion, storage considerations, maths, 
> graphics and so on (only needing to replace the light pen with the mouse of 
> course) which could be a fascinating exercise for a student. Yes there are 
> already Sketchpad-named apps and Sketchpad-like programs, but I'm not sure if 
> there is a near-100% faithful recreation of that original program as demoed 
> in the film out there.
> 
> Steve.

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