 The high resolution images were used by Peter Paul Biro, a forensic art examiner who studied a fingerprint on the vellum which he said was "highly comparable" to a fingerprint on Leonardo's unfinished "St. Jerome in the Wilderness".In 2010 David Grann published an article about the drawing in "The New Yorker", which implied that Biro had been involved with forged paintings attributed to Jackson Pollock.Biro consequently sued the writer and the publisher of the New Yorker Advance Media for defamation in 2011.