John,
This is the direction I started in - but still fail to get it to work. What
I have done is created a new table just for this information. The table has
a one to many relationship with the first table. I created a subform that
captures the list box of the information for this second table. But for some
reason, the data is not being recorded in the second table. Also if I view
another record in the main form and come back to this record, the list box
(in the subform) no longer indicates the selection previously identified.