DO=ditto Some census takers used this instead of the ditto marks which were most often used. A=Aunt AdD=Adopted Daughter AdS=Adopted Son At=Attendant Bo=Boarder B=Brother BL=Brother-in-law C=Cousin D=Daughter DL=Daughter-in-law F=Father FB=Foster brother FF=Foster father FL=Father-in-law FM=Foster mother FSi=Foster sister GA=Great aunt GD=Granddaughter GF=Grandfather GGF=Great grandfather GGGF=Great Great Grandfather GGGM=Great Great Grandmother GGM=Great Grandmother GM=Grandmother GNi=Grandniece GS=Grandson GU=Great uncle Hh=Hired hand I=Inmate L=Lodger M=Mother ML=Mother-in-law N=Nephew Ni=Niece Nu=Nurse O=Officer P=Patient Pr=Prisoner Pri-Principal Pu=Pupil R=Roomer Se=Servant Si=Sister S=Son SB=Stepbrother SBL=Stepbrother-in-law SF=Stepfather SFL=Stepfather-in-law SiL=Sister-in-law SL=Son-in-law SM=Stepmother SML=Stepmother-in-law SS=Stepson SSi=Stepsister SSiL=Stepsister-in-law SSL=Stepson-in-law Su=Superintendent U=Uncle Wa=Warden W=Wife