Hello and thanks for your help on this issue!
My form was coming along nicely, then I needed to add another field to it. When I did, after switching to form view, the fields were no longer visible. The form is essentially blank, except for the header, but I can still see all the fields in design view.
I have checked the usual suspects:
There is one record so far to display.
Recordset Type is Dynaset
Allow Additions: yes