Estimate $150,000 - 200,000. A REMARKABLE ESSAY PORTFOLIO CHRONICLING THE DESIGN OF THE 1964 5¢ J. F. KENNEDY MEMORIAL ISSUE. This amazing portfolio is truly one-of-a-kind as it was noted by the designers Raymond Loewy/William Snaith that…"It is planned to present the elaborate portfolios and sketches of the most carefully planned stamp in national history to the John F. Kennedy Library at Harvard University.". This may the only production material that has not been placed in an institution. $0 (Image)