Gift overview in 2006

Biggest beneficiary: World Monuments Fund
Other key beneficiaries: Environmental Defense, Wildlife Conservation Society; Nature Conservancy; American Bird Conservancy
Donor's background: Mr. Wilson is a retired hedge-fund manager.

Donations in 2006

Mr. Wilson, 80, pledged $67.5-million -- of which $6.8-million has been paid -- to the World Monuments Fund, in New York, for programs to preserve historic landmarks in 13 countries throughout Africa, the Americas, Asia, Europe, and the Middle East.

Mr. Wilson, who is vice chairman of the group's Board of Directors, stipulated that the organization must raise at least the amount of his pledge from donors outside the United States to receive all of the money. He promised to donate $1 for every $2 in cases where a foreign government awarded money to the group.

He also pledged $40.2-million -- of which $3.2-million has been paid -- to Environmental Defense, in New York, for general operating costs and for the group's work in pushing for greater disclosure about the environmental impact of projects in developing countries. Mr. Wilson stipulated that the group must attract donations from private foundations and individuals to get the entire gift. In cases where another donor gives less than $1-million, Mr. Wilson will match every dollar with 50 cents; if a donor contributes $1-million or more, Mr. Wilson will match each dollar given.

In addition, he pledged $30-million -- of which $3.8-million has been paid -- to the Wildlife Conservation Society, in New York, for the group's conservation projects.

He also pledged $8.5-million to the Nature Conservancy, in Arlington, Va., for its projects in the United States and abroad. Mr. Wilson said the group must match his pledged amount with donations from other philanthropists to get all of the money. He promised to pay 50 cents for every dollar donated between $25,000 and $100,000 from U.S. donors, and he will match every dollar beyond $100,000 as well as any donations from donors outside the United States. Mr. Wilson has not yet paid any of his pledged amount to the group.

Mr. Wilson also gave $1-million to the American Bird Conservancy, in The Plains, Va., to purchase land housing crucial bird habitats in Central and South America.