WANTED: Flexlist/Linked List

I have a unit written in 1990 by John W. Small (Power Software) .
McLean {*word*269}ia.
This is an excellent unit that allow an easy use of stacks, queues,
linked list ,etc.  However I have only a compiled TP 5.5 unit  I would
like to get a more recent unit or the source code.

Does any one know where to find an updated version of this Flexlist