Maaz,
There are actually two books that prominently feature Scott, neither of which I have read yet. (1) "The Phantom of the Card Table," a short manuscript published in 1931 by Eddie McGuire. (Appears to be devoted to Scott's card skills and techniques, as opposed to being a biographical work. McGuire is reputed to have been a self=serving amateur who used Scott. Scott was virtually unknown in the magic/card sharp world. But McGuire is said to have used him as a bargaining chip - as a means of meeting famous card men of the day. Scott eventually saw through McGuire, felt a lot of disdain toward him, and regretted allowing him to publish the manuscript); and (2) The other book is "The Phantom
s of the Card Table: Confessions of a Card Sharp," by David Britland and Gazzo, first published in 2003. It is 256 pages in length. I viewed the table of contents on Amazon, and it appears that there is much written about Scott's life and exploits, including his encounters with illustrious card men. So, I would bet that the story to which you referred (or a similar variant) is contained in this book. Here is the link to it on Amazon:
https://www.amazon.com/Phantoms-Card-Table-Confessions-Sharp/dp/1568582994 You can preview some of the book there. Gazzo had a long friendship with Scott, and was Scott's only known student. My understanding is that "The Phantom
s of the Card Table: Confessions of a Card Sharp" was not only based on Gazzo's first-hand knowledge, but is very well-researched, and many resources were drawn upon, including card experts such as Steve Forte and Bill Kalush to name but a few.