^^ Can't believe it waited 4 days for you. Looks like it will clean up very well. Clausing still supports the machine, though they ask top dollar for replacement parts. People part them out on Ebay with some frequency, but OWWM.org people is the first place I would try if I needed parts--those guys helped me out with a few things for my drill
Keep an eye out for Clausing the table raising crank/mechanism---I have seen a few come up for sale. They were a factory option and nice to have. I also have an extra table for mine, which is convenient to swing into place without having to disassemble what you setup on your main table.
Your drill's column may be 2-63/64" instead of 3" like Delta and many others. That means that other MFG's accessories may be loose/not fit on your column. This is true of some Clausings like yours, and I'm not sure if it's true of all of them. Just something to know. I'm not sure if Atlas (precursor to Clausing) did this as well---maybe their table raising systems might fit?
Clausing also sold a very cool hydraulic powerfeed unit for your drill that sits on top of the drill head, and an air-over-oil piston pushes down on the spindle when activated (there is a bearing between the spindle and the piston). It adds a foot of height and you would need hydraulic rigging, but it's a really cool system, and actually has some nice advantages over standard mechanical powerfeeds (like no gears to break if things get stuck). I have *almost* bought one of these for my drill twice, before coming back to reality and realizing I pretty much never have to drill more than 10 identical holes in a workpiece.
The other thing to have is a nice drill press vise. You want something that cannot spin when the drill snags (it will almost every time you punch through a through-hole). Please don't use your left hand as a drill vise---it will work until you start drilling something sharp, and on that day it will decide to become a spinning sword of death. What you want it a:
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Heinrich 13-WH Drill Vise https://www.heinrichco.com/sdvise.htm (has a safety bar that you can quick-lock down to your Clausing's table, or just rest the safety bar against the column so it can't twist). I have this on my drill and also in the 'real' machine shop. We have used everything, and they are the best.
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Wahlstrom/Eagle/AMF Float Lock vise. https://www.penntoolco.com/wahlstrom-float-lock-drill-press-vises/ Very similar to Heinrich and have been made since the 60's so they come up used. Some of the newer ones have quick release, which I would definitely want if I went this route.
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Lassy drill vise.
https://www.lassytools.com/slidevises.html Even more $$ and rarely come up used, and heavy. Different from the above and very nice if you like that approach. Personally, I don't want an X/Y table on my drill press, because I prefer to do layout on the workpiece, center-punch where I want to drill the hold, then wiggle the vise around until it's centered on the drill bit (and also let the drill start and move it the last few thou before I lock down the vise). But if you want to drill a bunch of holes in a row like on a milling machine, maybe Lassy is for you.
Or a machinist holddown set if you have more patience would work fine. At very least, set up a bolt or something through one of your Clausing table slots that your vice will stop against instead of spinning.