American male non-fiction writers

John_Gregory_Dunne

John Gregory Dunne (May 25, 1932 – December 30, 2003) was an American writer. He began his career as a journalist for Time magazine before expanding into writing criticism, essays, novels, and screenplays. He often collaborated with his wife, Joan Didion.

Leo_Buscaglia

Felice Leonardo Buscaglia (March 31, 1924 – June 12, 1998), also known as "Dr. Love", was an American author, motivational speaker, and a professor in the Department of Special Education at the University of Southern California.

Donald_Carl_Johanson

Donald Carl Johanson (born June 28, 1943) is an American paleoanthropologist. He is known for discovering, with Yves Coppens and Maurice Taieb, the fossil of a female hominin australopithecine known as "Lucy" in the Afar Triangle region of Hadar, Ethiopia.

Jack_Haley,_Jr.

John Joseph Haley III (October 25, 1933 – April 21, 2001), known as Jack Haley Jr., was an American director, producer, and writer, and a two-time recipient of the Emmy Award. His credits include directing the 1974 compilation film That's Entertainment!.
He was the second husband of Liza Minnelli, daughter of Judy Garland, who had starred with his father in The Wizard of Oz.

Felix_Gilbert

Felix Gilbert (May 21, 1905 – February 14, 1991) was a German-born American historian of early modern and modern Europe.
Gilbert was born in Baden-Baden, Germany, to a middle-class Jewish family, and part of the Mendelssohn Bartholdy clan. In the latter half of the 1920s, Gilbert studied under Friedrich Meinecke at the University of Berlin. Gilbert's area of expertise was the Renaissance, especially the diplomatic history of the period He was a fellow of the Institute for Advanced Study in Princeton from 1962 to 1975, and maintained an active involvement as an emeritus faculty member until his death in 1991. He was elected to the American Academy of Arts and Sciences in 1963 and the American Philosophical Society in 1969.The main reading room of the German Historical Institute in Washington, D.C. is named in his honor.

George_Sarton

George Alfred Leon Sarton (; 31 August 1884 – 22 March 1956) was a Belgian-American chemist and historian. He is considered the founder of the discipline of the history of science as an independent field of study. His most influential works were the Introduction to the History of Science, which consists of three volumes and 4,296 pages and the journal Isis. Sarton ultimately aimed to achieve an integrated philosophy of science that provided a connection between the sciences and the humanities, which he referred to as "the new humanism".

Kenneth_Adelman

Kenneth Lee Adelman (born June 9, 1946) is an American diplomat, political writer, policy analyst and William Shakespeare scholar. Adelman has been a member of the board of directors of the global data collection company RIWI Corp. since June 2016.

Gayelord_Hauser

Benjamin Gayelord Hauser (May 17, 1895 - December 26, 1984), popularly known as Gayelord Hauser, was an American nutritionist and self-help writer, who promoted the 'natural way of eating' during the mid-20th century. He promoted foods rich in vitamin B and discouraged consumption of sugar and white flour. He rose to fame as a self-help author, popular on the lecture and social circuits, and was nutritional advisor to many celebrities.
Hauser was supported by many film stars but was often in conflict with the medical community. He promised people they could add years to their life by eating five "wonder foods": blackstrap molasses, brewer's yeast, skimmed milk, wheat germ and yogurt. He was criticized as a "food faddist" and his dieting ideas were described by medical doctors as pseudoscientific and quackery.