I assume Don Lancaster got the idea for this
Digital Logic MicroLab from the DEC Computer Lab.
<troll>
Someone had to invent logic symbols (the iconography
painted on the front). Any chance it was DEC?
</troll>
A look to 1957 seems to not show the common symbology,
so its possible they were not ported from MIT...
What was the year of the DEC Lab?
The LAB-8 supposedly came out in 1968.
It's possible a simpler version was earlier.
John A.