Sourdough Flights. Second Edition of the Koestler Alaska Flight Cover Catalogue. Revised and published by Jesse G. Johnson Lieutenant Commander, US Navy

60pp., 8vo, printed wraps (leathery texture), covers sl. grubby with number "342" written top left front, good condition. "No.12 of a Limited Autographed Edition of Two Hundred Copies | Faithfully yours | [signed in manuscript]] August E. Koestler | and | Jesse G. Johnson." No copy listed on COPAC, several on WorldCat.