Kirk,

As an addendum to my previous post, and again at the risk of stating something
obvious to you...

There are three parts to an old-style Kennedy drawer slide: the rails that are
integral to the drawer, the extensible slide, and the rails that are integral to
the cabinet.

You can see that the slide is not coming out of the rails integral to the
cabinet. That's why it is peened over. ( I would have used the word "crimped" )

So, rather than trying to free the slide from the cabinet rails, instead seek to
free the slide from the rails on the drawer.

I'm going to go out on a limb and say that the drawer comes off of the slide,
rather than the slide come off the cabinet.

The little round hole in the front end of the slide may be important. If it did
not serve a purpose, it wouldn't be there.

Shine a light into the gap behind a fully extended drawer. Any hints hiding in
there?

Shine a light lengthwise down the slide. Can you see the catch?

Can you feel anything under the felt on the sides of the drawer?

John Ruth,
Hoping his hasn't written nonsense.