I started my quest to collect a Tolstoi back set a few months ago. I have 50 (39 graded with 11 on the way) which includes 7 HOFers.
http://imageevent.com/vanslykefan/prewar1/tolstoibacks
That accounts for about 20% of the confirmed subjects. It has been a ton of fun adding each card to my set. Don't know when I will be done, if ever, but as I learned patience is key.
Rob