Autographed letter signed in full, responding to a request by a musicologist for information regarding Recardo Vines, in part: "...Ricardo Vines was a dear friend. We went to Buenos Aires where I was at the Theatre Colon Opera. He was not only a great pianist but a wonderful human being. It was a long time since I was there! 1935..." 1 page on personal letterhead stapled together with the envelope in which Pons' letter was sent and the typed letter which requested the information. 7" x 10.25". Texas, July 31, 1973. Very good condition.