Question: What digest-size science fiction magazine did the man known as the "Dean of Science Fiction Artists" provide artwork for?

Context paragraphs:
Science Fiction Adventures (1956 magazine): Science Fiction Adventures was an American digest-size science fiction magazine, published from 1956 to 1958 by Royal Publications as a companion to "Infinity Science Fiction", which had been launched the previous year.  It was edited by Larry T. Shaw throughout its short run.  "Science Fiction Adventures" focused on longer fiction than appeared in "Infinity"; these were often labelled as novels, though they were rarely longer than 20,000 words.  Shaw declared in his first editorial that he wanted to bring back a "sense of wonder", and he printed straightforward action adventure stories.  Robert Silverberg was a prolific contributor, under his own name and under the pseudonym "Calvin M. Knox", and he also collaborated with Randall Garrett, under the name "Robert Randall", on a story in the first issue.  Other well-known writers occasionally appeared, including Cyril M. Kornbluth, Algis Budrys, and Harry Harrison.  The magazine was cancelled because of disappointing sales; the final issue was dated June 1958.

Science Fiction Adventures (British magazine): Science Fiction Adventures was a British digest-size science fiction magazine, published from 1958 to 1963 by Nova Publications as a companion to "New Worlds" and "Science Fantasy".  It was edited by John Carnell.  "Science Fiction Adventures" began as a reprint of the American magazine of the same name, "Science Fiction Adventures", but after only three issues the American version ceased publication.  Instead of closing down the British version, which had growing circulation, Nova decided to continue publishing it with new material.  The fifth issue was the last which contained stories reprinted from the American magazine, though Carnell did occasionally reprint stories thereafter from other sources.

Frank Kelly Freas: Frank Kelly Freas (August 27, 1922 – January 2, 2005) was an American science fiction and fantasy artist with a career spanning more than 50 years.  He was known as the "Dean of Science Fiction Artists" and he was the second artist inducted by the Science Fiction Hall of Fame.

Final Blackout: Final Blackout is a dystopic science fiction novel by author L. Ron Hubbard.  The novel is set in the future and follows a man known as "the Lieutenant" as he restores order to England after a world war.  First published in serialized format in 1940 in the science fiction magazine "Astounding Science Fiction", "Final Blackout" was published in book form in 1948 by The Hadley Publishing Co..  Author Services Inc. published a hardcover edition of the book in 1988, and in 1989 the Church of Scientology-affiliated organization Bridge Publications said that a film director named Christopher Cain had signed a contract to write and direct a movie version based on the book.

Science Fiction Quarterly: Science Fiction Quarterly was an American pulp science fiction magazine that was published from 1940 to 1943 and again from 1951 to 1958.  Charles Hornig served as editor for the first two issues; Robert A. W. Lowndes edited the remainder.  "Science Fiction Quarterly" was launched by publisher Louis Silberkleit during a boom in science fiction magazines at the end of the 1930s.  Silberkleit launched two other science fiction titles ("Science Fiction" and "Future Fiction) "at about the same time: all three ceased publication before the end of World War II, falling prey to slow sales and paper shortages.  In 1950 and 1951, as the market improved, Silberkleit relaunched "Future Fiction" and "Science Fiction Quarterly".  By the time "Science Fiction Quarterly" ceased publication in 1958, it was the last surviving science fiction pulp.

Vargo Statten Science Fiction Magazine: Vargo Statten Science Fiction Magazine (later Vargo Statten British Science Fiction Magazine, The British Science Fiction Magazine and The British Space Fiction Magazine) was a British science fiction magazine which published nineteen issues between 1954 and 1956.  It was initially published by Scion Press, with control passing to a successor company, Scion Distributors, after Scion went bankrupt in early 1954.  At the end of 1954, as part payment for a debt, Scion Distributors handed control of the magazine to Dragon Press, who continued it for another twelve issues.  E.C. Tubb and John Russell Fearn were regular contributors, and Kenneth Bulmer also published several stories in the magazine.  Barrington Bayley's first published story, "Combat's End", appeared in May 1954.  The editor was initially Alistair Paterson, but after seven issues Fearn took the helm: "Vargo Statten" was one of Fearn's aliases, and the magazine's title had been chosen because of his popularity.  Neither Paterson nor Fearn had enough of a budget to attract good quality submissions, and a printing strike in 1956 brought an end to the magazine's life.

Venture Science Fiction: Venture Science Fiction was an American digest-size science fiction magazine, first published from 1957 to 1958, and revived for a brief run in 1969 and 1970.  Ten issues were published of the 1950s version, with another six in the second run.  It was founded in both instances as a companion to "The Magazine of Fantasy & Science Fiction"; Robert P. Mills edited the 1950s version, and Edward L. Ferman was editor during the second run.  A British edition appeared for 28 issues between 1963 and 1965; it reprinted material from "The Magazine of Fantasy & Science Fiction" as well as from the US edition of "Venture".  There was also an Australian edition, which was identical to the British version but dated two months later.

Hugo Award for Best Fan Artist: The Hugo Awards are presented every year by the World Science Fiction Society for the best science fiction or fantasy works and achievements of the previous year.  The award is named after Hugo Gernsback, the founder of the pioneering science fiction magazine "Amazing Stories", and was once officially known as the Science Fiction Achievement Award.  The award has been described as "a fine showcase for speculative fiction" and "the best known literary award for science fiction writing".  The Hugo Award for Best Fan Artist is given each year for artists of works related to science fiction or fantasy which appeared in low- or non-paying publications such as semiprozines or fanzines.  A Hugo Award for professional artists is also given.  The fan award was first presented in 1967 and has been awarded annually.  Beginning in 1996, Retrospective Hugo Awards, or "Retro Hugos", have been available to be awarded for years 50, 75, or 100 years prior in which no awards were given.  To date, Retro Hugo awards have been awarded for 1939, 1941, 1946, 1951, and 1954, although the 1939, 1941, and 1954 Retro Hugos received insufficient nominations for the Fan Artist Hugo to make the ballot.

Galaxy Science Fiction: Galaxy Science Fiction was an American digest-size science fiction magazine, published from 1950 to 1980.  It was founded by a French-Italian company, World Editions by Cino Del Duca, which was looking to break into the American market.  World Editions hired as editor H. L. Gold, who rapidly made "Galaxy" the leading science fiction (sf) magazine of its time, focusing on stories about social issues rather than technology.

Science Fiction Adventures (1952 magazine): Science Fiction Adventures was an American digest-size science fiction magazine, published from 1952 to 1954 by Science Fiction Publications.  It was edited by Lester del Rey, under the pseudonym "Philip St. John", and was targeted at a younger audience than its companion magazine, "Space Science Fiction".  Contributors included Algis Budrys, Raymond Z. Gallun, Robert Sheckley, and del Rey himself, who published his novel "Police Your Planet" under the pseudonym "Erik van Lhin".  Damon Knight contributed a book review column beginning with the fifth issue.  Cyril M. Kornbluth's novel "The Syndic" was serialized in 1954.  Artwork was provided by H.R. van Dongen, Kelly Freas, and Paul Orban, among others.

Supporting paragraphs: Science Fiction Adventures (1952 magazine) Frank Kelly Freas
Answer: Science Fiction Adventures