Montana Cover Balance, 1860-1950, collection and study of 500-600 covers mounted on pages in 3-ring binders, with detailed explanations of each town, its history, dates of operation of its post office, rarity factor of postmarks, with many rated "3 to 7" and above, inumerable view post cards with a wealth of pictorial interest, and other items of county information; mixed condition on some but generally F-VF. Estimate  $750 - 1,000. $0