Balloon Small 184×320 Medium 368×640 Large 589×1024 Download Tiff Original 1380×2400 | (3.2 MB) Description The balloon was designed for navigation of the air. Keywords air navigation, air travel, hot air Galleries Air Transportation Source: The Teachers' and Pupils' Cyclopaedia (Kansas City: The Bufton Book Company, 1909) 1:139
