Bill Noble wrote:
please go to my web site (www.wbnoble.com) and click on mysteries and
look at the first item pictured - it almost looks like a mortise
accessory for a drill press, but not quite - someone must recognize it,
and if we can figure out what it is, someone must need it.... and then I
can get it to where it is needed.

if you don't want to go to my site, here is a direct link to one of the
photos:
http://www.wbnoble.com/mysteries/PICTv0007.JPG
the dimensions and another photo are on my site

Looks to me like a small PTO yoke