20th-century American philanthropists

Marjorie Merriweather Post (March 15, 1887 – September 12, 1973) was an American businesswoman, socialite, and philanthropist. She was the daughter of C. W. Post and the owner of General Foods Corporation. For much of Marjorie Post's life, she was known as the wealthiest woman in the United States.Post used much of her fortune to collect art, particularly Imperial-era Russian art, much of which is now on display at Hillwood, the museum which was her estate in Washington, D.C. She is also known for her mansion, Mar-a-Lago, in Palm Beach, Florida.

Ralph S. Evinrude (September 27, 1907 – May 21, 1986) was an American business magnate who was chairman of Outboard Marine Corporation, and the husband of singer and entertainer Frances Langford.
Evinrude was born in Milwaukee, Wisconsin, to Bess and Ole Evinrude. Evinrude's father had emigrated from Norway in 1882 and had developed the first commercially feasible outboard motor, thus creating a new industry and form of recreation. In 1927, Evinrude joined the family firm, Elto Outboard Motor Company after two years at the University of Wisconsin–Madison. Ole Evinrude died on July 12, 1934, and Ralph Evinrude took over running the company. In 1936, Elto Outboard Motor Company merged with Waukegan, Illinois-based Johnson Motor Company to form Outboard Marine Corporation (OMC).In 1936, the board of directors of OMC elected Evinrude president and director. In 1953, he was elected vice-chairman of the board and chairman of OMC's Executive Committee. He became chairman of OMC in 1963. During his 55-year career in the family business, Evinrude collaborated with manufacturing giants such as Milwaukee based Briggs and Stratton, and expanded the company's product line to include boats, lawnmowers, snowmobiles, and chain saws, and expanded operations worldwide. In 1982 when Evinrude retired as chairman, OMC had more than 9,000 persons employed in operations throughout the world.
Evinrude was married 3 times. Evinrude’s first wife, Marion Armitage, died. Ralph and Marion had two children: Thomas (born 1933) and Sally. Evinrude married his second wife, Joan "Bobbe" Everett in Lake Forest, Illinois, in December 1951. In 1955, shortly after his divorce from his 2nd wife, Evinrude married his 3rd wife, Frances Langford and moved to her estate in Jensen Beach, Florida. They shared interests in business and boating and spent much of their time aboard their 118-foot (36 m) yacht Chanticleer. They opened a resort in Jensen Beach called The Outrigger. Evinrude and Langford also maintained a cottage on a small island at the east end of Baie Fine, a fjord on the north shore of Georgian Bay, in Lake Huron, in what is now Killarney Provincial Park in Ontario, Canada. Chanticleer was often seen tied up at the island during the summer.
During his later working years and during retirement, Evinrude supported a wide variety of philanthropic activities. Some of his interests focused on Florida and the marine industry, but others benefited Milwaukee-area hospitals, institutions of higher education and the arts.Evinrude died at Martin Memorial Hospital in Stuart, Florida, at the age of 78. OMC has a test center in Stuart which bears his name.

John Yeon (October 29, 1910 – March 13, 1994) was an American architect in Portland, Oregon, in the mid-twentieth century. He is regarded as one of the early practitioners of the Northwest Regional style of Modernism. Largely self-taught, Yeon’s wide ranging activities encompassed planning, conservation, historic preservation, art collecting, and urban activism. He was a connoisseur of objets d’art as well as landscapes, and one of Oregon’s most gifted architectural designers, even while his output was limited.The family name is pronounced "yawn," not "yee-on."

Roberta P. Crenshaw (April 17, 1914 - February 8, 2005) was an American civic leader and philanthropist. Crenshaw campaigned for over 60 years to preserve parkland in Austin, Texas and supported Austin-area cultural institutions.

Jane Fortune (August 7, 1942 – September 23, 2018) was an American author and journalist. Many of her publications and philanthropic activities were centered on the research, restoration, and exhibition of art by women in Florence, Italy.

Barry Allan Ackerley (April 15, 1934 – March 21, 2011) was an American businessman. He was the former chairman and CEO of the Ackerley Group media company. He was also the owner of the Seattle SuperSonics basketball franchise from 1983 to 2001 and the Seattle Storm basketball franchise from 2000 to 2001.

Lois Cowles Harrison (June 23, 1934 – June 6, 2013) was a civic leader, women's rights activist, and philanthropist.

Katherine Loker (August 13, 1915 – June 26, 2008) was an American heiress and philanthropist. She donated tens of millions of dollars to fund university programs and infrastructure improvement at California State University, Dominguez Hills, Harvard University, and the University of Southern California (USC). She also made significant contributions to the California Museum of Science and Industry, the California Hospital Medical Center in Los Angeles, the Donald P. Loker Cancer Treatment Center, the Los Angeles Music Center, and the Richard Nixon Library in Yorba Linda, among other institutions. She was honored in 1996 with the Harvard Alumni Association Medal and in 2007 received the Presidential Medallion, the highest award of USC. Loker was awarded an honorary doctorate from USC in 1997 and an honorary Doctor of Humane Letters degree from the Harvard in 2000. In 1999, The New York Times spotlighted her leading role in philanthropy. The rose 'Katherine Loker' is named in her honor as are many facilities in California and Massachusetts.

Tichi Wilkerson Kassel (May 10, 1926 – March 8, 2004) was an American film personality and the publisher of The Hollywood Reporter. She established the Women in Film organization, the Key Art and Marketing Concepts awards, and several scholarships for film students.

John Brooks Fuqua (pronounced ) (June 26, 1918 – April 5, 2006) was a businessman, philanthropist, airport creator and chairman of The Fuqua Companies and Fuqua Enterprises. The Fuqua School of Business at Duke University is named after him, as is the Fuqua School in Farmville, Virginia.