Don,
You searched in all the correct places, but you're not going to find any info on those motors. Those motors were donated to FIRST as a single batch, without any provision for ordering more. I believe they were donated a few years ago, hence the lack of any information on them.
Why FIRST doesn't have (at least) a contact name at the supplier is beyond me. However, I did find
this link to what I believe is our supplied motor.
Good luck,
BEN