Columbia subject headings:
Harvard subject headings:
Balla, Giacomo, 1871-1958--Correspondence.
Futurism (Art)
Princeton subject headings:
Balla, Giacomo, 1871-1958--Criticism and interpretation.
Balla, Giacomo, 1871-1958.
Futurism (Art)--Italy.
Futurism (Literary movement)--Italy.