Exhibit 24.1 JOINT FILING AGREEMENT The undersigned hereby agree that the statement on Schedule 13D with respect to the shares of Common Stock, par value $.01 per share, of Penton Media, Inc., a Delaware corporation ("Penton"), dated August 11, 1998,...Joint Filing Agreement • August 12th, 1998 • Harris Irving B/Harris Neison/Harris William W Trust/ Et Al
This agreement may be executed in separate counterparts by each of the undersigned, each of which shall be an original but all of which, taken together, shall constitute one and the same instrument. It shall not be necessary that each of the undersigned sign any one counterpart.
POWER OF ATTORNEYJoint Filing Agreement • August 12th, 1998 • Harris Irving B/Harris Neison/Harris William W Trust/ Et Al
This agreement may be executed in separate counterparts by each of the undersigned, each of which shall be an original but all of which, taken together, shall constitute one and the same instrument. It shall not be necessary that each of the undersigned sign any one counterpart.
