Try the Maryland State Archives for naturalizations filed in local courts and the NARA Mid-Atlantic Region ([email protected]) for those filed in Federal court in Baltimore. Those filed in Maryland Federal court around 1850 will not have any more information than you already have. All the court maintained was a register with name, country of origin, and date of naturalization. Rebecca >Subject: Naturalization Record >Where might I find a naturalization record of a person from Scotland wholived in Baltimore and became a citizen by 1850?