1853-1854       Rooms at the Post Office Building, Federal Street, Allegheny, Pennsylvania.

Purviance was recorded in an advertisement that ran from October 22, 1853 to September 2, 1854 in the Plymouth Advertiser (Plymouth, Ohio).  Purviance’s Daguerrean Rooms, Post Office Building, Third door below Rail Road Station, Federal Street, Allegheny.  Miniatures taken at this Establishment either singly or in groups, of all sizes.  oct. 15.

Purviance is not recorded in other photographic directories.  It is possible that William T. Purviance and Purviance are the same person.