Antique drawer slides

We have this great old cabinet we bought in an antique store in Newburyport Massachusetts.  That was when we lived in our first house in Massachusetts.  It's lived in every kitchen since that house (this is the third one).  

It has these amazing drawer slides made entirely of wood.   I've never seen drawer slides like these anywhere.  You can see the drawer slide in operation here.  It makes this wonderful creaking noise when the drawer opens and closes (I also like the squeak of old screen doors).

Here is what they look like with the drawer removed.  Note the wooden rollers.

And here is what they look like removed.  See all those wooden rollers.