sentences:  Only one of them, Dr. Raleigh Ashlin Skelton, keeper of the Museum's map collection, had significant expertise relevant to the problems posed by the map (his colleague George Painter, the first person to whom Davis had shown the map in 1957, was brought in for the transcription and translation of the "Relation") and the secrecy almost completely ruled out consultation with specialists.Witten did his best to help during this period, not only answering the authors' questions, but offering suggestions of his own.After years of study, the proofs of the book, "The Vinland Map and the Tartar Relation", were ready by the end of 1964, and Mellon donated the map to Yale.