Question: What magazine was published first, Viltis or McClure's?

Context paragraphs:
Guter Rat: Guter Rat (meaning "Good Advice" in English) is a German language monthly business and consumer magazine published first in the East Germany.  The magazine is one of three East German magazines, namely "Eulenspiegel" and "das Magazin", which have survived German reunification.

Earth's Last Citadel: Earth's Last Citadel is a science fiction novel written by the American husband and wife team of C.L. Moore and Henry Kuttner.  It was first published in 1943 in the magazine "Argosy" and in book form it was published first in 1964.

Allgemeine Zeitung des Judentums: Allgemeine Zeitung des Judentums (until May 1903: "Allgemeine Zeitung des Judenthums") was a Jewish German magazine devoted to Jewish interests, founded in 1837 by Ludwig Philippson (1811–89), published first in Leipzig and later in Berlin.  In 1860 it had a circulation of approximately 1,500.  It was read not only in Germany, Austria, and the Netherlands but also in Eastern Europe, and continued to appear until 1922.

Književna reč: Književna reč was a literary magazine that was published first in Yugoslavia, and then in Serbia from 1972 to 2004.  It had a significant influence on Yugoslav literary and cultural scene, especially during 1980s.  The magazine was publishing leading authors of the period, and also bringing literary news from the country and abroad.

Under a Cruel Star: Under a Cruel Star: A Life in Prague 1941-1968 was published first under this title by Plunkett Lake Press, Cambridge, Massachusetts in 1986.  The memoir was written by Heda Margolius Kovály and translated with Franci and Helen Epstein.  It is now available in a Holmes & Meier, New York 1997 edition (ISBN  ), in a Plunkett Lake Press 2010 eBook edition and in a Granta, London 2012 edition (ISBN  ).  "Prague Farewell" was the book title in the UK in previous editions.  The memoir was originally written in Czech and published in Canada under the title "Na vlastní kůži" by 68 Publishers, a well-known publishing house for Czech expatriates, in Toronto in 1973.  An English translation appeared in the same year as the first part of the book "The Victors and the Vanquished" published by Horizon Press in New York.  A British edition of the book excluded the second treatise and was published by Weidenfeld and Nicolson under the title "I Do Not Want To Remember" in 1973.  The book is also available in Chinese (ISBN  ), Danish (ISBN  ), Dutch (ISBN  ), French (ISBN  ), German (ISBN  ), Romanian (ISBN  ), Spanish (ISBN  ) and the original Czech editions (ISBN  ).

McClure's: McClure's or McClure's Magazine (1893–1929) was an American illustrated monthly periodical popular at the turn of the 20th century.  The magazine is credited with having started the tradition of muckraking journalism (investigative, watchdog, or reform journalism), and helped shape the moral compass of the day.

The Bohemian Girl (short story): The Bohemian Girl is a short story by Willa Cather.  It was written when Cather was living in Cherry Valley, New York, with Isabelle McClung whilst "Alexander's Bridge" was being serialised in "McClure's".  It was first published in "McClure's" in August 1912.

The Mother Hive: "The Mother Hive" is a short story or fable by Rudyard Kipling about the decline and destruction of a hive of bees.  It was published first in "Collier's Weekly" in the US on 28 November 1908.  Later in December of the same year, it was published in the "Windsor Magazine" in the UK with a title of the "Adventures of Melissa".

Viltis (magazine): Viltis is a magazine of folklore, folk music and folk dance.  It was created by Vytautas Beliajus in the 1940s and was one of the first magazines devoted to folk customs and arts.  It is illustrated and printed in English.  The headquarters was in Denver, Colorado.  Its scope is international, and a typical issues covers several different regions.  Issues include recipes, dance descriptions, book reviews, research articles, performance reviews, travel tips, costuming advice, and other topics.

Tros of Samothrace: Tros of Samothrace is a fantasy historical novel by author Talbot Mundy.  The story was composed of several novellas which were published originally in the American magazine "Adventure" during 1925 and 1926.  It was published first together as a book during 1934 by Appleton-Century company.

Supporting paragraphs: Viltis (magazine) McClure's
Answer: McClure's