I asked the same question about my 1955 vintabe unisaw on OWWM and got
this reply. I believe he knows what he's talking about.
Its definitely worth searching the site and the Yahoo group (there is a
link) has some great files. You can find the manual there. (Or the
best copy anyone has been able to come up with so far.)
A starting point could be here which has a link you can use to date
your new baby.