Editor's note: Since publishing our 2007 list with the late Leona Helmsley as the No. 1 donor, we have realized it was more accurate to count her bequest among gifts for 2008. An inventory of her assets has been filed with the Surrogate's Court of the State of New York, so we now have a better idea of the worth of her bequest and her intentions for it.We have changed the data in our searchable database to reflect that Barron Hilton is now the No. 1 donor for 2007, and Helmsley the top donor for 2008.
Correction, Feb. 11, 2008: Because of a reporting error, the 2007 Slate 60 did not originally include New York Mayor Michael Bloomberg. Bloomberg made donations totaling $205 million to 1,100 different organizations this year, which is good for eighth on the list. The total takes into account Bloomberg's personal giving, his shares of his company's giving, and his foundation's giving. This is hisfifth appearance on the Slate 60. Correction, Feb. 13, 2008: T. Denny Sanford's donation should have been reported as $474.6 million, not $431 million. Subsequently, Sanford's office has informed us of another 2007 contribution to his foundation that brings his total to $502.6 milion. This makes him No. 4 on the list. (Return to the corrected sentence.) Correction, Feb. 19, 2008: Because of a reporting error, the original list failed to include Microsoft co-founder Paul Allen. He gave $46 million to various groups this year, including the Paul G. Allen Family Foundation and the Experience Music Project. He's No. 49 on the list.
Special thanks to the research department at the Center on Philanthropy at Indiana University. Additional research by Slate editorial assistant Chris Wilson and Slate interns Alex Joseph and Jonathan Rubin.