"Dahlgren smoothbore cannons" . "Dahlgren gun" . "Dahlgren gun" . . "Dahlgren gun" . "32-pounder" . "thirty-two-pounder" . . "Dahlgren gun#Dahlgren boat howitzers" . "Dahlgren smooth-bore cannon" . "Dahlgrens" . "Dahlgren boat howitzer" . "Dahlgren smoothbore" . "Dahlgren coastal defense cannon" . "Dahlgren smooth bores" . "Dahlgren XV-inch shell guns" . "Dahlgren cannon" . "Dahlgren smooth bore" . "Dahlgren boat howitzers" . . . . "Dahlgren shell guns" . . . . "boat howitzers" . "Dahlgren shell gun" . . "XV-inch (381 mm) Dahlgren shell gun" . "Dahlgren smoothbores" . "Cannons" . "D." . . "Dahlgren rifle" . "Dahlgren" . . "Dahlgren smoothbore guns" . "Dahlgren howitzers" .