Paul McCobb Irwin table project - bit off more than I should have?  

Restoration seems like a lot of effort to undertake for a somewhat lackluster design, but I suppose there are far stupider hobbies a person could have. Economic feasibility be damned-

It looks like you just put screws up through the holes into the new top, which will need to be made of veneered plywood (not solid wood because wood movement would be incompatible with the mounting method).
Or were you going to do a travertine top?

My restoration projects never make economic sense, but I'm a sucker for neglected furniture, and I actually quite like the design. I'll probably go with a wood top as opposed to veneer.
Any ideas on the glides? Is there a source out there?

The glides are the least of your challenges.
http://www.mcmaster.com/#standard-furniture-leg-protectors/=11alom5.
(#14 looks about right)

Oh, forgot to mention....the legs are bent, and the brass has some issues....

Yeah, we noticed.
You're welcome, BTW.

If you go with a solid wood top, you will need to re-think the method for attaching the top as you will not want to put screws through the holes around the perimeter. (When the wood expands and contracts it will do bad things like bending or breaking the frame, or itself).

C'mon, Leif. There's no rational reason to put a solid wood top on that thing.
Besides, I think Zoo's looking more for sympathy here than advice.

Nope, definitely looking for advice, and sorry for any perceived slight.
I'm excited to give this a whirl, however futile the effort, or upside down I may get with $.

Well, then the glides I noted above are not like the originals which are more akin to screw-in "Domes of Silence" type. You'll have to check if there are threaded holes in the bottoms of the legs for these, but virtually identical replacements aren't too hard to find.
I think the piece is a table instead of a desk and appears to have suffered prolonged exposure to a high humidity environment. Is the substrate of the panels particle board? Is the Calvin badge intact inside the drawer? How bad is the corrosion on the bronze tubing?
If you've got some skills, it wouldn't be too hard to rehab the piece, but it's certainly never going to bring the kinds of prices that you see on good condition Irwin stuff.

I wasn't suggesting that putting a solid top on the piece is a good idea. It seems to be Zoo's idea though, so it ought to be known why that is a complicated idea, so that the complications are either overcome, or a different solution is found, no?

I think these things are pretty sharp when in nice condition.

That one looks a little *too* sharp, maybe.

ZooMob - the original glides are screwed on to a u-shape flat light gauge brass inserted into the bottom of the square legs and as already mentioned are similar to the early Eames chairs glides but smaller. Most hardware stores and hobby shops carry brass shapes and are not hard to find you just need tools to bend and drill the right size hole for the glides. I got lucky awhile back finding an unused box of these screw on glides while volunteering picking up donations at the Habitat for Humanity Restores. One of the Mccobb tables /bench I have was repaired by the previous owner by inserting wood into the base of the leg and used a nail on type glide the same size as the originals.
Also, maybe a more expensive option but there are versions of these tables with white glass tops with polished edges. called Vitrolite (or other makes). The Poggen Pohl kitchen showroom I used to work at had the floor of the entire showroom with these material.
There are also travertine tops.
And the work and effort you are doing for this table is to primarily make it better looking, useful and functional not to add $$$.