Hi, Marty! 
 
I think you may have just coined a new OLDTOOLS phrase: "Iniquitous Dens of Tool
Porn".  Is it original? We used to honor phrase-making by facetiously appending
something like "(TM Marty Reser)" to the phrase whenever we use it on OLDTOOLS.
 
Since you contrasted this to "rust hunting" in the same sentence, I take it that
the definition is a place where drool-able new tools, or at least high-end old
tools, can be purchased.
 
I think I was in one of these "Dens" just a couple of years ago. I visited the
Lie-Nielsen factory store in Maine. Going farther back, I once visited the Lee
Valley store in Canada.  I'd think these would qualify under your definition.
 
The old Route 66 is the subject of more than one guidebook, like this one:
 
  http://www.hamiltonbook.com/legendary-route-66-a-journey-through-
time-along-americas-mother-road">http://www.hamiltonbook.com/legendary-
route-66-a-journey-through-time-along-americas-mother-road
 
(No relationship with Hamiltonbook except as a very satisfied customer for over
35 years.)
John Ruth 
Metuchen NJ, where signs of Spring are everywhere.