| 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 |
|   | |
| Alger | Cyrus Alger & Company, Boston MA |
| Ames | N.P. Ames, J.T. Ames or Ames Manufacturing Company, MA |
| FPF | Fort Pitt Foundry, Pittsburgh PA |
| Phoenix | Phoenix Iron Co., Phoenixville PA |
| Revere | Revere Copper Company, Boston MA |
| unknown | foundry not marked or unreadable |
| WPF | West Point Foundry, Cold Spring NY |
Listings are in bore size order. Within a given bore size, the sequence is guns, howitzers, and rifles. With each of these, the order is field, then siege.
| FOUNDRY | REG# | INSP | FDY# | YR | WEIGHT | GRVS | COMMENTS |
|---|---|---|---|---|---|---|---|
| 3-inch Ordnance Rifles, Model of 1861 | |||||||
| Phoenix | 158 | JMW | 169 | 62 | 817 | 7RH | upright at park entrance |
| Phoenix | 827 | SCL | *887 | 64 | 816 | 7RH | upright at park entrance |
| 6-pounder bronze field gun, Model of 1841 | |||||||
| Alger | 163 | BH | 632 | 57 |   |   | foundry no. uncertain |
| Ames | 33 | JWR |   | 42 | 882 |   | extensively engraved |
| 4.5-inch Ordnance Rifles, Model of 1861 | |||||||
| FPF | 23 | *JM | 1098 | 62 | *3572 | 9RH | upright at park entrance |
| FPF |   |   | 1232 |   |   | 9RH | upright at park entrance |
| 24-pounder siege gun, Model of 1819 | |||||||
| WPF | 89 | JB |   | 27 | 5514 |   | from Ft. Donelson |
| 24-pounder flank howitzers, Model of 1844 | |||||||
| Alger | 291 | JWR | *773 | 49 | *1510 |   | inverted on ground |
| Alger | 293 | JWR | *775 | 49 | *1499 |   | on ground |
| unknown |   |   |   |   |   |   | unreadable but has later chase ring loc. |
| unknown |   |   |   |   |   |   | unreadable but has later chase ring loc. |
| 10-inch siege mortar, circa 1807 | |||||||
| *Foxall |   |   |   |   |   |   | muzzle down, no visible marks |
| Total Civil War cannon at Fort Washington Park: 12 | |||||||
