Here's a picture on the MCNY photo portal of 960 Fifth Avenue, 77th Street, built 1929 (not the "Clark residence" as labeled, which was the prior building.)

 

It's a very tight close up of the stone.  That's a very unusual photo subject, thus I assume the client (from the information associated, Indiana Limestone) had a very specific reason.

 

 

(This may come in handy if the first link, directly to that specific photograph, doesn't work.)  Ken and I have discussed how limestone was specifically chosen in the 1920s.  What do others see when you look at it?  How would this be used to "sell" the product?  "Look at our cool bedding!"??

 

If you want to waste a day, there are lots of ways to search - 100+ photographs taken referencing "limestone":

 

 

You can search for architect, address, material, etc.     (I have copied here Lacy Schutz, who is El Jefe of the collection.)

 

Christopher