A letter handwritten by Adler (dated 1915) is to be auctioned on Thursday, October 10, 2019 at 10:30 a.m. EST by Swann Galleries. 

The item is being shared by Jean Richards (, whose family was acquainted with Alfred Adler.

You can see the on line catalogue by going to this webpage: 

The value of the letter  (LOT 63) is estimated at $800-$1200. For Bidding instructions, please go to this webpage: 

Line catalogue
For bidding click here