ballooning
The voyagers looking down upon the giant's caussway from The balloon travels of Robert Merry and his young friends over various countries in Europe.
The Balloon Buster, Frank Luke of Arizona
This book tells the story of Frank Luke. Luke was born in Phoenix, Arizona in 1897, one of nine children of German-American immigrants. He enlisted in the U.S. Army Aviation Section in 1917 during World War I. He was an agressive pilot who took on the unique challenge of attacking and destroying enemy observation balloons. These balloons were always heavily defended by anti-aircraft guns and enemy aicraft, but 2nd Lt. Luke was adept at the challenge and accounted for 14 enemy balloons destroyed and 4 enemy aircraft shot down.