I just purchased this directory and I am willing to do lookups. -Jennifer Peterson THOMSON'S MERCANTILE & PROFESSIONAL DIRECTORY For the States of Delaware, Maryland, Virginia, North Carolina, and the District of Columbia Containing the name, location, Post Office address, and style of business of all mercantile firms, manufacturing establishments, attorneys, physicians, bankers, hotel keepers, &c., in the states named above. To which is appended an Advertising Register of many of the principal mercantile houses and manufacturing establishments in Petersburg, Richmond, Fredericksburg, Baltimore, Philadelphia, Newark & New York, Carefully collected and arranged for 1851-52. Published by William Thomson, No. 6 Carroll Hall, BALTIMORE, 1851.