*UNITED STATES ORDNANCE.* Of first importance is Louis de Tousard, _American Artillerist"s Companion_, 2 vols., Philadelphia, 1809-13.
For performance and use of artillery during the 1860"s the following sources are useful: John Gibbon, _The Artillerist"s Manual_, New York, 1863; Q. A. Gillmore, _Engineer and Artillery Operations against the Defences of Charleston Harbor in 1863_, New York, 1865; his _Official Report ... of the Siege and Reduction of Fort Pulaski, Georgia_, New York, 1862; and the _Official Records of Union and Confederate Armies and Navies_. Ordnance manuals of the period include: _Instruction for Heavy Artillery_, U. S., Charleston, 1861; _Ordnance Instructions for the United States Navy_, Washington, 1866; J. Gorgas, _The Ordnance Manual for the Use of the Officers of the Confederate States Army_, Richmond, 1863. For United States developments after 1860: L. L.
Bruff, _A Text-book of Ordnance and Gunnery_, New York, 1903; F. T.
Hines and F. W. Ward, _The Service of Coast Artillery_, New York, 1910; the U. S. Field Artillery School"s _Construction of Field Artillery Materiel_ and _General Characteristics of Field Artillery Ammunition_, Fort Sill, 1941.
*GENERAL.* For the history of artillery, as well as additional biographical and technical details, there is the Field Artillery School"s excellent booklet, _History of the Development of Field Artillery Materiel_, Fort Sill, 1941. Henry W. L. Hime, _The Origin of Artillery_, New York, 1915, is most useful, as is that standard work, the _Encyclopedia Britannica_, 1894 edition: Arms and Armour, Artillery, Gunmaking, Gunnery, Gunpowder; 1938 edition: Artillery, Coehoorn, Engines of War, Fireworks, Gribeauval, Gun, Gunnery, Gunpowder, Musket, Ordnance, Rocket, Small arms, and Tartaglia.