Dear Carnap, Dear Van : the Quine-Carnap correspondence and related work / W. V. Quine and Rudolf Carnap ; edited, with an introduction, by Richard Creath. - Quine, Willard Orman van, 1908-2000. (OLS)http://pul/name/38815; Carnap, Rudolf, 1891-1970. (OLS)http://pul/name/10976 (University of California Press, 1990)