Columbia subject headings:
Riots--Oklahoma--Tulsa.
Tulsa (Okla.)--History.
Tulsa (Okla.)--Race relations.
Harvard subject headings:
Riots--Oklahoma--Tulsa.
Tulsa (Okla.)--History.
Tulsa (Okla.)--Race relations.
Princeton subject headings:
Riots--Oklahoma--Tulsa.
Tulsa (Okla.)--Race relations.