Online databases such as The Foundation Center’s Foundation Directory Online (FDO) can be very useful tools. You can search for grants, review grantmaker profiles, research companies and review IRS Form 990s. Can’t afford a monthly subscription? Look for a Nonprofit Resource Center, part of a network of reference libraries established by The Foundation Center. The San Diego Foundation in Liberty Station is part of the Center’s network; it offers free access to the FDO (and more!).