Airplane view of the business district and upper harbor

Front:
430. PORTLAND, OREGON FIRST FLIGHT AIR MAIL R AUGUST હિન PHOTO A. M. PRENTISS. AIRPLANE VIEW OF THE BUSINESS DISTRICT AND UPPER HARBOR, PORTLAND, OREGON. 101277

Back:
40 AIR MAIL PORTLAND, OREGON FIRST FLIGHT AIR MAIL 5¢ RATE AUGUST 1st, 1928 Lipschuetz & Katz PORTLAND, OREGON C T. AMERICAN ART COLORED CHI ICAGO