Shows portions of Minnesota, Iowa, Wisconsin, and Illinois.; "8-'29"--lower right in neat line; "September 1929 (25M)--lower margin."; Relief shown by shading.; Shows airways, air distances at 10 mile intervals, and stops in red; railroads and cities shown in black.; On verso: schedule, text, and ill. 42 x 48 centimeters, folded to 23 x 11 centimeters Scale approximately 1:1,140,000 General Map Collection
Use of this item may be governed by US and international copyright laws. You may be able to use this item, but copyright and other considerations may apply. For possible additional information or guidance on your use, please contact the contributing organization.