Updated 01 April 2010

Deck and Internal arrangements of Vesuvius showing the Pneumatic Guns and Air Tanks
U.S. Naval Historical Center Vesuvius DANFS Photograph, I.D. # unknown or not assigned

Simplified internal diagram of submarine Holland showing the two pneumatic dynamite guns.  The aft gun was later removed.
This sketch was originally published in "Scientific American", Volume 45, January - June 1898
U.S. Naval Historical Center Photograph NH # 53474

Submarine Holland firing her bow "Dynamite Gun" in 1898 with the projectile visible in the upper right corner
U.S. Naval Historical Center Photograph NH # 63089

Pneumatic gun on Brazilian Nictheroy
Title on print:  Canhao de dynamite do Nitheroy (sic)
Detroit Publishing Company Collection Photograph
Library of Congress Photograph ID LC-D4-21236

An early Zalinsky Coast Artillery Gun ca. 1888
Note the muzzle exhaust
The back of this photograph has the legend "8 in Dynamite Gun"
United States National Archives ID 75-B-35-12 courtesy of James Poyner

15" (38.1 cm) Projectile as carried by Vesuvius
Image from Scientific American, Vol. LIX, No. 18 (New York:  Munn & Co., November 3, 1888), page 271
Use here courtesy of Spanish-American War Centennial Website

21 April 2008 - Benchmark
01 April 2010 - Replaced picture of Coastal Artillery Gun