Keywords: 9inchDahlgren.jpg 9 inch Dahlgren cannon on USS Miami From the en public domain U S Naval Historical Center 1864 This image is in the public domain; PD 200px PD-USGov Transwiki details All user names refer to en wikipedia 2004-11-21 03 32 McMullen 740×582×8 84084 bytes <nowiki>9 inch Dahlgren cannon on USS Miami</nowiki> USS Miami ship 1861 Dahlgren guns |