▁travel ▁west ▁via ▁Pan ama ▁and ▁his ▁six ▁years ▁in ▁California , ▁including ▁a ▁surve ying ▁expedition ▁to ▁Los ▁Angeles ▁in ▁June ▁ 1 8 4 9 ▁with ▁Lieutenant ▁Edward ▁O . C . ▁Ord . ▁Ord ▁and ▁H utton ▁mapped ▁Los ▁Angeles ▁in ▁July ▁and ▁August ▁ 1 8 4 9 . ▁Lieutenant ▁Ord ▁survey ed ▁the ▁pueblo ; ▁H utton ▁sketch ed ▁many ▁scenes ▁of ▁the ▁pueblo ▁and ▁drew ▁the ▁first ▁map ▁from ▁Ord ' s ▁survey , ▁recording ▁street ▁names ▁in ▁both ▁Spanish ▁and ▁English ▁for ▁the ▁first ▁time . ▁In ▁July ▁ 1 8 5 0 , ▁H utton ▁was ▁appointed ▁county ▁survey or ▁of ▁San ▁Luis ▁Ob is po ▁County , ▁a ▁position ▁he ▁held ▁until ▁res ign ing ▁on ▁August ▁ 4 , ▁ 1 8 5 1 . ▁ ▁Engineering ▁career ▁ ▁Return ed ▁to ▁Maryland , ▁H utton ▁became ▁the ▁assistant ▁engineer ▁for ▁the ▁Metropolitan ▁Rail road ▁in ▁ 1 8 5 3 . ▁He ▁was ▁an ▁assistant ▁engineer ▁to ▁General ▁Mont gom ery ▁C . ▁Me igs ▁on ▁the ▁Washington ▁Aqu ed uct ▁and ▁Cab in ▁John ▁Bridge ▁from ▁ 1 8 5 5 , ▁succeed ing ▁Me igs ▁as ▁Chief ▁Engine er ▁in ▁ 1 8 6 2 - 6 3 . ▁He ▁later ▁served ▁as ▁Chief ▁Engine er ▁for ▁the ▁Ann apolis ▁Water ▁Works ▁( 1 8 6 6 ), ▁the ▁Ch es ape ake ▁& ▁Ohio ▁Canal , ▁and ▁the ▁Western ▁Maryland ▁Rail road ▁( 1 8 7 1 ). ▁