[Meudon]: Chalais-Meudon, . Scale drawings. Wrappers. Octavo. [vii] 29 pages. Fine. Bound in gray paper covers over side-stapled textblock. Minor rubs to edges, a few spots and light stains, primarily to rear cover. Binding sound.
This is a scarce World War I era manual on piloted, tethered observation balloons for use on land or at sea. Indeed, these balloons, tethered to destroyers, were very effective U-boat spotters. There are 6 fold-out drawings of various aspects design of the R Type balloon. The 29-page text is printed side-by-side in French and English.