Saratoga Springs, NY: Skidmore College, 1971. First edition. Softcover. 39 pages. Skidmore College Bulletin Vol. 56 August 1971, No. 4. The text of Prosch's lecture. An about very good copy in stapled wrappers with some underlining and marginalia. Signed and inscribed by Prosch on the verso of the front cover. Uncommon thus.