Columbia subject headings:
Artist couples.
Couples in literature.
Couples.
Scientist couples.
Harvard subject headings:
Artist couples--Congresses.
Couples in art--Congresses.
Couples--Congresses.
Interpersonal relations--Congresses
Musicians--Family relationships--Congresses.
Professional employees--Family relationships--Congresses.
Scientist couples--Congresses.
Princeton subject headings: