Okay, I've got another proposal, although I don't currently have solid proof that the game came out for DOS. It definitely came out for Amiga and apparently the Atari ST and Applie II as well, so I don't think a forgotten PC version is out of the question.
"Ted E. Bear Presents First Shapes"
http://hol.abime.net/3784
http://www.elisoftware.org/index.php...Canada_Release
I'm not saying this is it for sure, but it could add another point of calibration, so please check it out and think about what an old B&W DOS version might be like...