1903
Tom Yawkey born in Detroit, Michigan and raised and educated in New York and Connecticut
1909
Jean (Hollander) Yawkey born in New York and raised and educated in Long Island
1925
Tom Yawkey graduates from Yale University
1930s
Tom Yawkey begins to quietly and anonymously support a number of local charities throughout the Northeast and in Gerorgetown County, South Carolina (winter home)
  1933
Tom Yawkey purchases the Boston Red Sox
1940s
Jean (Hollander) Yawkey actively volunteers for the American Red Cross during World War II
1940s
Tom Yawkey supports the construction of Georgetown Memorial Hospital in South Carolina
1944
Tom and Jean Yawkey marry in Georgetown, South Carolina
  1952
Tom and Jean Yawkey help to establish the Agganis Foundation Scholarship Program
1953
Tom and Jean Yawkey begin to support the National Baseball Hall of Fame and Museum
1953
Tom and Jean Yawkey adopt the Jimmy Fund and the work of Dr. Sidney Farber as the primary charity of the Boston Red Sox
1968
Tom Yawkey elected to the Board of Directors of the National Baseball Hall of Fame and Museum
1970
Tom and Jean Yawkey purchase property and construct Tara Hall Home for Boys in Georgetown, South Carolina near their winter home
 
1976
Tom Yawkey passes away in Boston
1976
Tom Yawkey's will transfers 20,000 acres of land in South Carolina, now known as the Tom Yawkey Wildlife Center, to the State of South Carolina and establishes the Yawkey Foundation to maintain the land
1980s
Jean Yawkey purchases the first refrigerated truck for the Greater Boston Food Bank's Second Helping program
1980
Tom Yawkey elected as a member of the National Baseball Hall of Fame and Museum, the last owner elected
  1982
Jean Yawkey establishes Yawkey Foundation II

Jean Yawkey begins annual support of the Boys & Girls Clubs of Boston
1984
Jean Yawkey elected to the Board of Directors of the National Baseball Hall of Fame and Museum, the first woman elected to this Board
1986
Jean Yawkey establishes a baseball scholarship program at Boston College
1986
Jean Yawkey purchases property for The Family Inn in Brookline, Massachusetts
1988
Jean Yawkey sponsors the Jackie Robinson Foundation national tour in Boston
1990
Jean Yawkey honored as the New England Woman of the Year by the Boston Chamber of Commerce at Symphony Hall
1992
Jean Yawkey passes away in Boston
1993
The Yawkey Foundations, in collaboration with the Red Sox, establish the Rookie League and the RBI League in Boston's inner-city neighborhoods
1994
Yawkey/Jackie Robinson Foundation annual scholarship established
2002
Historic sale of the Boston Red Sox results in a significant expansion of Yawkey Foundation II's assets
2012
Yawkey Foundations celebrate a decade of giving since the 2002 sale of Boston Red Sox with $316 million in grants awarded across New England and Georgetown, South Carolina