This page of the return provides a complete grants list. Note that while grantee addresses and a brief description of the grant is requested by the IRS on the form, in many cases all you'll see is a listing of recipient names and dollar amounts of grants.
If you are researching one of the larger foundations, you won't necessarily have to work with a tax return in order to study a grants list or review basic financial data. The larger foundations often issue annual reports, a document that is usually far easier to read than a 990-PF. Annual reports often provide a description of the grant in cases where the 990-PF does not.
Tip: sometimes the statement "see attached" is written on page 10. If this is the case, then look toward the end of the tax return for the schedule of grants.