Columbia subject headings:
Charitable uses, trusts, and foundations--United States--Directories.
Income tax--United States--Deductions--Charitable contributions--Directories.
Harvard subject headings:
Charitable uses, trusts, and foundations--United States--Directories.
Income tax deductions for charitable contributions--United States--Directories.
Princeton subject headings:
Charitable uses, trusts, and foundations--United States--Directories.
Directories.
Income tax deductions for charitable contributions--United States--Directories.