Elizabeth Cole claimed to have found this proof in 1952. Thinking that the attempts to buy back the Tregian family home must be documented, Cole found "no less than twenty-eight signatures" in the "Truro Museum" (the Royal Cornwall Museum). She was particularly taken by two legal documents and showed photographs of them to Schofield who--"perhaps little cautiously" in Thompson's characterisation--"saw no reason to doubt but that Tregian was indeed the scribe of Egerton 3665 and, therefore, the Fitzwilliam Virginal Book." Thompson was able to not only track down the document that had convinced Cole and which she reproduced, but found one that could have been even more convincing. Despite Cole's assertion of similarity of hands, Thompson reproduces fragments of writing from the Fitzwilliam Virginal Book, Egerton 3665 and Christ Church MS. 510–14, and concludes that while the writing shows similarities of style, none of the works can be shown to be in the same hand. She even notes that Dart was not totally convinced as he later stated that Egerton 3665 was "almost certainly in [Tregian's] hand."