Keywords: Alexander D. Bache.jpg en Alexander Dallas Bache 1806 - 1867 American scientist U S Coast Guard official Unknown photographer and date Original photograph in possession of U S Navy en wikipedia Legoktm 2006-02-11 Postdlf wikipedia en PD-old Original upload log page en wikipedia Alexander_D _Bache jpg 2006-02-11 08 29 Postdlf 504×660×8 153918 bytes <nowiki>Alexander Dallas Bache 1806 - 1867 American scientist U S Coast Guard official Unknown photographer and date Original photograph in possession of U S Navy </nowiki> 1806 births 1867 deaths Science and technology in the United States Alexander Dallas Bache |