Columbia subject headings:
Posenenske, Charlotte--Exhibitions.
Roehr, Peter, 1944-1968--Exhibitions.
Harvard subject headings:
Posenenske, Charlotte--Exhibitions.
Roehr, Peter, 1944-1968--Exhibitions.
Princeton subject headings:
Posenenske, Charlotte--Exhibitions.
Roehr, Peter, 1944-1968--Exhibitions.