Jed, 

here is the part number for the socket described below:  179258-024.

As yet there are no approved sources.

The AVL description is:  SOCKET, IC, 24/.400, STAMPED, OPEN FRAME.  

Characteristics:  Open frame, inside frame dimensions to be determined.
		  Spacing of pin rows = 0.400".
		  Stamped contacts, may be single or dual beam.
		  Phospher bronze or Beryllium copper contacts, tin plated.
		  PC board mounting, tin plated leads.