All about robot turtles - links to info
Early turtles and Sandra Wills...https://arbesman.substack.com/p/general-turtle-inc-and-educational
Written by https://github.com/larsbrinkhoff in 2023:
"Notes about the General Turtle TT2500.
It's a custom TTL design mostly by Marvin Minsky. The hardware consists of a CPU executing 16-bit microinstructions out of a 4K control store. There are 8 fast registers, and 32 slower scratchpad locations. The main storage is a 16-bit wide up to 64K RAM. There is a keyboard for user input, and UART for talking to a host computer. There are two displays: one for text, and another for vector turtle graphics. The microcode refreshes both displays and interprets macrocode which is a display list for turtle graphics.
Danny Hillis wrote the microcode and invented SPIN and GROW."
See the website http://www.theoldrobots.com/ for lots of stuff...
There is an interesting site of Apoorva Gupta at https://www.theroboticsspace.com/
Emailed work of Simon Inns in Stockholm - he might be able to help - https://www.linkedin.com/in/simoninns/
Emailed Francis Massey in Luxumberg - he has robots....
The Powerhouse has a Tasmin Turtle - see https://collection.maas.museum/object/262955
Contact for Terrapin in Cambridge...https://www.terrapinlogo.com/
Great images and good info at https://www.weeklyrobotics.com/articles/2023_01_25_the_history_of_turtle_robots/