"1861 - 1865" . . . . . . . . . . . . . "Memoir of John A. Dahlgren Rear-Admiral, United States Navy" . "Memoir of John A. Dahlgren, Rear-Admiral United States Navy"@en . . "Memoir of John A. Dahlgren, rear-admiral United States navy"@en . "Memoir of John A. Dahlgren, rear-admiral United States navy" . "Memoirs of John A. Dahlgren, rear-admiral United States Navy"@en . "Memoirs of John A. Dahlgren, rear-admiral United States Navy" . "Biography"@en . . . . . . . . . "Personal narratives"@en . "Personal narratives" . . . . . . . "Important discoveries made by the late Admiral Dahlgren later in his career ended in an entire reorganization of naval ordnance. These improvements, accompanied by the introduction of steam and corresponding differences in the construction of our men-of-war, essentially modified the navy life of the present day." . "History"@en . "History" . . . . "Memoir of J.A. Dahlgren, rear-admiral United States Navy"@en . "Memoir of John A. Dahlgren, rear-admiral United States Navy : With portr. and illustrated" . . "United States" . .