Show amazing 20 year advance although the science of photography from the air was used to advantage toward the close of the first world war it has seen its greatest development during the peace ot of the last 20 odd years keeping abreast of the amazing expansion of modern air transportation the technique which today makes possible the clear distinct reconnaissance pictures which aviators are taking from the very threshold of the stratosphere is the result of millions of exposures made not only by the armies and navies of the world but by countless civilian photo photographers photographed graphe rs who have helped to blaze the trail in the greatest advance the art of map making has seen in many centuries writes bradford washburn in N new ew england naturalist speedy efficient field work and lab laboratory orator y procedure may be e essential assenti ai to victory in war time but they are fully as important to business prestige and profit in iii time of peace |