United Airlines System Map United States Air Routes c. 1959 promotional brochure(Old Maps, Americana, Travel, Tourism, Air Travel, United States, U. S. Map, United Airlines, Air Routes). System Map. Published c. 1959, United States by United Air Lines Folding brochure. Text in English. Illustrated throughout. Publisher's pictorial paper wrappers folded into panels, printed on both sides. A two sided map showing air routes across the entire U. S., including Hawaii. Item is old and shows some signs of handling and time. Item is not