99 Pounds Mortar Stick Bomb Shell Small 122×320 Medium 245×640 Large 392×1024 Download Tiff Original 918×2400 | (1.3 MB) Description An illustration of an early 99 lb. stick bomb used in a mortar. This bomb had vanes, or wings, around the shell to travel further. Keywords bomb, bombs, Military Artillery, Mortar Shell, Mortar Shell 99 Pound Stick Bomb, shell, shells Galleries Military Artillery Source: Encyclopaedia Britannica (12th ed., vol. 32) (New York, NY: The Encyclopaedia Britannica Company, 1922)