Used to work at Logo Computer Systems in Montreal, Papert was chairman, he visited from MIT from time to time. Spent the first few years of my career remotely diagnosing problems with Logo on //e, PC, Atari, C64 (arggh), Japanese machines (MSX), and Mac (hardly any Mac copies were sold, but we tried), and even DEC pc (I don't think that they sold any copies of that one). The big hits were the //e, C64 and PC versions.