Columbia subject headings:
Art criticism--Italy--History--20th century--Sources.
Art historians--Italy--Correspondence.
Longhi, Roberto, 1890-1970--Correspondence.
Ragghianti, Carlo Ludovico--Correspondence.
Harvard subject headings:
Art criticism--Italy--History--20th century--Sources.
Art historians--Italy--Correspondence.
Longhi, Roberto, 1890-1970--Correspondence.
Ragghianti, Carlo Ludovico--Correspondence.
Princeton subject headings:
Art criticism--Italy--History--20th century--Sources.
Art historians--Italy--Correspondence.
Longhi, Roberto, 1890-1970--Correspondence.
Ragghianti, Carlo Ludovico--Correspondence.