No. 8: Rachel Lambert (Bunny) Mellon
Ms. Mellon gave more than $400-million to a foundation named for her father.
By Maria Di Mento
Senior Editor
No. 21: John and Tashia Morgridge
The former chairman of Cisco Systems and his wife pledged $100-million to their alma mater, the University of Wisconsin at Madison.
By Maria Di Mento
Senior Editor
The WhatsApp co-founder gave more than $550-million to the Silicon Valley Community Foundation.
By Maria Di Mento
Senior Editor
The retired orthopedic spinal surgeon pledged $50-million to University of Southern California for research and $15-million to the Found Animals Foundation, which he started in 2005.
By Maria Di Mento
Senior Editor
Mr. Asbjornson pledged $50-million to Montana State University College of Engineering for the construction a new campus and to establish a center for interdisciplinary projects.
By Maria Di Mento
Senior Editor
The Microsoft co-founder gave $100-million to fight Ebola and nearly $200-million to his foundation.
By Maria Di Mento
Senior Editor
No. 37: Gordon and Llura Liggett Gund
The couple gave more than $58-million to a group Mr. Gund co-founded to fight blindness.
By Maria Di Mento
Senior Editor
Mr. Sarofim gave the Museum of Fine Arts, Houston, $70-million to expand its campus.
By Maria Di Mento
Senior Editor
Mr. Stanley gave $65-million for mental-health research.
By Maria Di Mento
Senior Editor
No. 38: Madison (Al) and Lila Reetz Self
The couple left the bulk of their estate, $58-million, to the University of Kansas, where they met as students in 1943.
By Maria Di Mento
Senior Editor