From what I can see in your pictures that looks a lot like one of the Taiwanese mills that were imported starting in the mid 1970s and similar ones are still available today under various badged names.
Similar to those sold in Canada in this link
This heavy duty knee mill has the power and space to make quick and accurate work of just about any machining job you can throw at it.
www.busybeetools.com
and this one from a Google search where they a poster mentions one by Jet that was a popular brand in Canada and the U.S.A.
Framebuilders - I have My Mill back - Well it never left but it has been out of commission for a while. Today I made the knee's way wipers and completed the reassembly with the table's fitting. I find that adjusting gibs is much like adjusting hubs, It's really nice when the tables slides so...
www.bikeforums.net
The more recent versions may now come from China, but I can't say for sure.
There were several variations in these machines with some having Morse spindle tapers and other with an R8 Taper.
They were also advertised in Model Engineer and sold under a number of names in the U.K.
I seem to recall some with a Myford badge on them.
I have seen one or two in the flesh but never operated one so can't add anything more than that right now.
Jim