| Abbreviations and Symbols | |
|---|---|
| * | Datum following inferred from contemporary documents |
| REG# | Army or Navy Registry Number |
| INSP | Initials of inspecting ordnance officer or other inspector |
| FDY# | Foundry number (founder's own internal control number) |
| GRVS | Number of rifling grooves, Right or Left hand twist |
| YR | Year cannon was completed and/or inspected |
| Ames | N.P. Ames, J.T. Ames or Ames Manufacturing Co., MA |
| FPF | Fort Pitt Foundry, Pittsburgh PA |
| Greenwood | Miles Greenwood & Co., Cincinnati OH |
| Phoenix | Phoenix Iron Co., Phoenixville PA |
| Seyfert | Seyfert, McManus & Co., Reading PA |
| SBF | South Boston Foundry (later name for Cyrus Alger & Co.) |
| unknown | foundry markings unreadable |
| FOUNDRY | REG# | INSP | FDY# | YR | WEIGHT | GRVS | COMMENTS |
|---|---|---|---|---|---|---|---|
| 3-inch Ordnance Rifles, Model of 1861 | |||||||
| Phoenix | 7RH | markings masked by metal plate | |||||
| Phoenix | 7RH | unreadable, chipped muzzle, knob off | |||||
| 6-pounder bronze field gun, Model of 1841 | |||||||
| Ames | 382 | JWR | 50 | 883 | once at Governors Island, Reg# uncertain | ||
| 4.5-inch Ordnance Rifle, Model of 1861 | |||||||
| FPF | 38 | JRE | 1288 | 62 | 3572 | 9RH | once there if no longer |
| 12-pounder bronze Napoleons, Model of 1857 | |||||||
| Ames | 18 | GTB | 61 | 1232 | w/handles, from Ft. Jay | ||
| unknown | polished smooth, indoors | ||||||
| 24-pounder flank howitzer, Model of 1844 | |||||||
| SMcM | 35 | SCL | 93 | 64 | 1496 | ||
| 10-inch Rodman guns, sleeved to 8-inch rifles via muzzle insert | |||||||
| SBF | 18 | CB | 2044 | 76 | 16025 | 15RH | originally Alger No. 86/JGB/1865/15100# |
| SBF | 21 | CB | 2269 | 76 | 16090 | 15RH | originally Alger No.168/JGB/1867/15165# |
| 20-inch Rodman gun | |||||||
| FPF | 1 | *SCL | 2053 | 64 | 116497 | in park outside main gate | |
| Total Civil War cannon at Fort Hamilton, NY: 10 | |||||||