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 (jeanrichards1@me.com), whose family was acquainted with Alfred Adler.

You can see the on line catalogue by going to this webpage: https://www.swanngalleries.com/catalogues/upcoming-auctions/ 

The value of the letter  (LOT 63) is estimated at $800-$1200. For Bidding instructions, please go to this webpage: https://www.swanngalleries.com/auctions/buying/ 

Line catalogue
For bidding click here
Adler-letter