As impressive as your restoration of your mill is, even more impressive is that you have done it in just over a week!
Here is the video that I based my DRO installation on.
Thanks for asking. It's a power downfeed. Did this several years ago using some spare timing belt pulleys and a DC gear reduction motor purchased from Surplus Center. The controller is from a treadmill I scrapped out (120vac in and 90vdc out). Up or down feed is selected with a DPDT switch and a potentionmeter controls the speed. The belt cover is kind of cheesy but is functional.
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We must have the same vintage, as mine has a "For Ward" switch too.