OK, so I quickly ruled out the easy causes for no blower thanks to your help, Steve. The fuse is fine and the controller is putting out the right signal at the connection on the firewall.
Having been into the blower motor once before, it struck me as very funny how you were able to condense 2 hours of tedium with three words, "expose blower motor". The first time I took 5 hours or so in and out, including brush replacement and bearing lube. Hopefully I'll be able to get in and figure the problem out in an hour or two. I don't want to order the motor assembly until I know what isn't working.
Thanks again for such accurate advice.