Columbia subject headings:
Artists--Spain--Correspondence.
Goya, Francisco, 1746-1828.
Zapater, Martín.
Harvard subject headings:
Artists--Spain--Correspondence.
Goya, Francisco, 1746-1828.
Zapater, Martín.
Princeton subject headings:
Goya, Francisco, 1746-1828.
Painters--Spain--Correspondence.