PDP-11 "NLOGO"
The ultimate version? Timestamps into 1979.
Can be assembled to run on three targets: SITS, Unix, and LSI-11. Of course we want SITS (#1730).
Mentions 2500 in many places. One file is GTFUN 89 which probably refers to General Turtle.
Also "GTL display" and "2500 display".
RJL; ARC 2 on 3100055 speaks of the project to build a new Logo machine based on an LSI-11, the 3500, for Societe Generale Tortue.
LOGO; NOVICE 281
A Novice's Guide to Using the
General Turtle 3500 LOGO System
This is a draft of a guide for teachers about how to use the 3500
LOGO system.
This is what the 3500 eventually became.
08/12/79 15:06:35 Re: Word-processor info
General Turtle has a LSI-11 text editor,
somewhat Emacsish, with Concept-100 screen,
printer, floppies, etc. for about $15K.
Here's a photo of the LSI-11 based text processor by Societe Generale Tortue. If you zoom in you can see Logo messages in French ("Bienvenue a LOGO"), and the ? prompt character.

The version added here is the very latest PDP-11 Logo. Only the files needed for SITS are included in this commit.
According to this, there were five LSI-11 machines running Logo in France.
From Votre Ordinateur, Nº 11, February 1985, page 73