Vintage 1970 Green Fly Ozark Airlines 2/4 Lead Pencil Hard To Find. Ozark Airlines was an airline in the United States that operated from 1950 until 1986. For all aviation enthusiasts out there.These collectibles were made in the United States and are perfect for those who love to collect items from the golden age of aviation.Very Good vintage condition, has been sharpened and used. Same or next day USPS Shipping.