Located on mansion grounds ID: 5020 | This file appears in: Fenn Hall Fenn Hall, originally the Ohio Motor Co. building, was built in 1924 on the grounds of what was once part of the Tom L. Johnson Estate. The above 1898 Cleveland Atlas map shows the Johnson Estate grounds outlined in red. A part of Fenn Hall sits on grounds at one time occupied by a barn on the Johnson Estate. | Source: Cleveland Public Library, Digital Map Collection Download Original File SourceCleveland Public Library, Digital Map Collection "Located on mansion grounds" appears in: Fenn Hall