Columbia subject headings:
Angulo family--Pictorial works--Exhibitions.
Brothers--Portraits--Exhibitions.
Martensen, Dan--Exhibitions.
Photography of families--Exhibitions.
Photography, Artistic--Exhibitions.
Portrait photography--Exhibitions.
Harvard subject headings:
Angulo family--Portraits.
Martensen, Dan.
Photography of men.
Photography of young men.
Princeton subject headings: