Question: Are Prevention and Drum! both American magazines?

Context articles: Melissa Walker
Drum!
Frank Browning (author)
Susan Wallace
Prevention (magazine)
Frank Luther Mott
Byron Dobell
ISTOÉ
Dan Wynn
Humpty Dumpty (magazine)

Melissa Walker (born June 4, 1977) is an American author, working primarily in the young adult (teen) genre.
 She is also a freelance writer and has held several editorial positions at American magazines.
DRUM!
 is a North American educational drumming magazine.
 It features artist profiles, product reviews, lessons and advanced transcriptions covering rock, pop and related styles of music.
 The magazine was launched in 1991 with Andy Doerschuk as editor.
 In the 1990s it gained a reputation for its coverage of younger drummers in contemporary styles such as punk, rap-rock, and metal.
 It was the first magazine to feature artists such as Tré Cool (Green Day), Chad Smith (Red Hot Chili Peppers), Travis Barker (Blink-182) and others on its covers.
Frank Browning is an American author and former correspondent for National Public Radio.
 His books include "The Fate of Gender: Nature, Nurture and the Human Future" (Bloomsbury, June 2016) , "The Monk & the Skeptic: Dialogues on Sex, Faith and Religion" ( 2013), "The American Way of Crime: From Salem to Watergate" (1980), "The Culture of Desire: Paradox and Perversity in Gay Lives Today" (1993), "A Queer Geography: Journeys Toward a Sexual Self" (1996) and "Apples: Story of the Fruit of Temptation" (1996).
 He is also co-author with Sharon Silva of a cookbook, "An Apple Harvest: Recipes and Orchard Lore" (1999).
 He currently lives in Paris, France where he writes on arts for the Huffington Post; he contributes to a number of American magazines, including California.
 Raised on an apple orchard in Kentucky, he has lived in Washington, D.C., New York City, San Francisco, California, Los Angeles, California and Ann Arbor, Michigan and Brooklyn, New York.
 He has lived in Paris, France since 2001, is in a longterm relationship, and is currently working on a new book about the nature of time, touch, sexuality and the brain.
Susan Arnold Elston Wallace (December 25, 1830 – October 1, 1907) was an American author and poet from Crawfordsville, Indiana.
 In addition to writing travel articles for several American magazines and newspapers, Wallace published six books, five of which contain collected essays from her travels in the New Mexico Territory, Europe, and the Middle East in the 1880s: "The Land of the Pueblos" (1888), "The Storied Sea" (1883), "The Repose in Egypt: A Medley" (1888), "Along the Bosphorus, and Other Sketches" (1898), and "The City of the King: What the Child Jesus Saw and Heard" (1903).
 She was also the wife of Lew Wallace, a lawyer, American Civil War general, politician, and diplomat.
 Susan completed the manuscript of Lew Wallace's two-volume autobiography following his death in 1905, with the assistance of Mary Hannah Krout, another Crawfordsville author.
 Wallace died in Crawfordsville in 1907.
Prevention is an American healthy lifestyle magazine, started in 1950, and published by Rodale Press in Emmaus, Pennsylvania, in the United States.
 The range of subjects includes food, nutrition, workouts, beauty, and cooking.
 It was founded by J. I. Rodale and is currently led by Editorial Director Anne Alexander.
 It is one of the largest magazines in the world, with a circulation of 2 million editions around the world, and over 10,000,000 readers a month.
 The last edition of the Australian version of "Prevention" was published in December 2016.
Frank Luther Mott (April 4, 1886 in Rose Hill, Iowa – October 23, 1964 in Columbia, Missouri) was an American historian and journalist, who won the 1939 Pulitzer Prize for History for Volumes II and II of his series, "A History of American Magazines".
Byron Dobell (May 30, 1927 – January 21, 2017) was an American editor and artist.
 He is considered "one of the most respected and accomplished editors in New York magazine publishing history," the editor of several popular American magazines, including "American Heritage" and "Esquire".
 He is credited with helping the early careers of many writers such as Tom Wolfe, David Halberstam and Mario Puzo.
 In 1998, Dobell was inducted into the American Society of Magazine Editors Hall of Fame.
ISTOÉ (Portuguese for "This is", often written as Istoé or IstoÉ) is a weekly news magazine in Portuguese published in Brazil, roughly the equivalent of the American magazines "Time" or "Newsweek".
 The magazine was established in 1976.
 It is published weekly by Editora Três on Saturdays.
 It is considered one of the three main magazines being published in the country, along with "Veja" and "Época".
Dan Wynn (1920 in Chicago - 1995) was an award-winning editorial, portrait, and advertising photographer and film director.
 During his 45-year career, his work was published in many high-profile American magazines, including Esquire Magazine, New York Magazine, Travel + Leisure, Seventeen, Time, Newsweek, Harper's Bazaar, McCall's Magazine and Woman's Day.
 He also provided covers for books, record albums, and international magazines (sometimes with himself as his model).
Humpty Dumpty is a bimonthly American magazine for children 5 to 7 years old that takes its title from the nursery rhyme of the same name.
 The magazine features short stories, poems, nonfiction articles, games, comics, recipes, crafts, and more.
 Having been continuously produced for 60 years, it is one of the oldest American magazines for kids.