William Baird Searles (1934–1993) was a science fiction author and critic.
 He was best known for his long running review columns for the magazines "Asimov's" (reviewing books), "Amazing", and "Fantasy & Science Fiction" (reviewing films, television and related media).
 He also did occasional reviews for other publications, including "The New York Times", "Publishers Weekly", and "The Village Voice".
 He wrote several non-fiction works on the science fiction genre.
 Searles managed a science fiction and fantasy bookstore in New York City's Greenwich Village, the Science Fiction Shop, which is no longer in business.
Dafydd ab Hugh (, born David Friedman, on October 22, 1960) is a U.S. science fiction author.
 He is known for writing fiction in media franchises in the 1990s, including several novels for the "Star Trek" franchise.
 He also co-wrote four novels associated with the game "Doom" with fellow science fiction author Brad Linaweaver.
 His novelette, "The Coon Rolled Down and Ruptured His Larinks, A Squeezed Novel by Mr. Skunk", was nominated for the Hugo Award and Nebula Award and is perhaps his best-known work.
Algirdas Jonas "Algis" Budrys (January 9, 1931 – June 9, 2008) was a Lithuanian-American science fiction author, editor, and critic.
 He was also known under the pen names Frank Mason, Alger Rome, John A. Sentry, William Scarff, and Paul Janvier.
Geir Arne Olsen (1957 - 1990), better known under his pen-name Leonard Borgzinner, was a Norwegian essayist, self-taught political philosopher, science fiction author, illustrator and fanzine editor.
 Borgzinner is most noted for his many contributions to the alternative culture magazine "Gateavisa" and for his two books, a collection of science fiction and fantasy stories, "Universets varmedød og andre selvmord" (1981; "The Heat-Death of the Universe and other Suicides") and a collection of essays in political philosophy, "Anarki og adel: elementer til en kulturrevolusjon" (1998; "Anarchy and Nobility: Elements towards a Cultural Revolution").
 As an illustrator he was known for his often satirical drawings for fanzines and underground publications, including some comic strips.
 His fanzine production in the late 1970s, still partly under the name of Geir Arne Olsen, spanned both science fiction fandom and the punk music world, the former in the fanzines "TRALFA" and "The Borgzinner Medicine Show", and the latter most notably in the two published issues of "666", published in opposition to the Norwegian punk establishment.
 Influences on his work included Pre-Socratic philosophy, Marquis de Sade, anarchism, Friedrich Nietzsche, William S. Burroughs, new wave science fiction, Samuel R. Delany, Yukio Mishima and Michel Foucault.
Michaelmas (1977) is a science fiction novel by American writer Algis Budrys.
George Oliver Smith (April 9, 1911 – May 27, 1981) (also known by the pseudonym Wesley Long) was an American science fiction author.
 He is not to be confused with George H. Smith, another American science fiction author.
The Road to Science Fiction is a series of science fiction anthologies edited by American science fiction author, scholar and editor James Gunn.
 Composed as a textbook set to teach the evolution of science fiction literature, the series is now available as mass market publications.
Domingo Santos (born 1942) is the pseudonym of Spaniard science fiction author Pedro Domingo Mutiñó.
 He is among the best-known science fiction authors in Spain.
 Together with Sebastián Martínez and Luis Vigil he founded the Spanish science fiction magazine "Nueva Dimensión".
 A science fiction prize, awarded annually at the national science fiction convention HispaCon, is named in his honor.
Steven Frankos is an American fantasy author.
 He is the brother of mystery, fantasy and science fiction author Laura Frankos and the brother-in-law of science fiction author Harry Turtledove.
Robert Augustine Ward "Doc" Lowndes (September 4, 1916 – July 14, 1998) was an American science fiction author, editor and fan.
 He was known best as the editor of "Future Science Fiction", "Science Fiction", and "Science Fiction Quarterly", among many other crime-fiction, western, sports-fiction, and other pulp and digest sized magazines for Columbia Publications.
 Among the most famous writers he was first to publish at Columbia was mystery writer Edward D. Hoch, who in turn would contribute to Lowndes's fiction magazines as long as he was editing them.Lowndes was a principal member of the Futurians.
 His first story, "The Outpost at Altark"for "Super Science" in 1940, was written in collaboration with fellow Futurian Donald A. Wollheim, uncredited.

Question: Michaelmas was by the science fiction author of what nationality?
Answer: Lithuanian-American