Columbia subject headings:
Gershwin, George, 1898-1937--Manuscripts--Facsimiles.
Music--Manuscripts--Facsimiles.
Overtures--Scores.
Harvard subject headings:
Gershwin, George, 1898-1937--Manuscripts--Facsimiles.
Music--Manuscripts--Facsimiles.
Overtures--Scores.
Princeton subject headings:
Gershwin, George, 1898-1937--Manuscripts--Facsimiles.
Music--Manuscripts--Facsimiles.
Overtures--Scores.
Overtures.
Scores.