Question: Which magazine was founded first Yankee or Bop?

Context articles: Penco
Bop (magazine)
Yankee (magazine)
Stewart Spiers
Krefeld Pinguine
Andrew Bryan (Baptist)
1923 World Series
Syracuse Triad
Tanta University
First Descents

Penco (Mapudungun: "Peumo water") is a Chilean city and commune in Concepción Province, Bío Bío Region on the Bay of Concepción.
 Founded as the city of Concepción del Nuevo Extremo ('beginning of the new extreme') on February 12, 1550 by Pedro de Valdivia, it is the third oldest city in Chili, after capital Santiago founded first in 1541 and La Serena second in 1544.
Bop magazine was a monthly American entertainment magazine for kids 10 years of age and teens.
 It began publication in the summer of 1983 and was published by Laufer Media, which also publishes "Tiger Beat" magazine.
 The headquarters of "Bop" was in Studio City, California.
Yankee Magazine was founded in 1935 and is based in Dublin, New Hampshire, United States.
Stewart Spiers was a small but innovative firm of plane-makers in Scotland, founded first of all in Ayr in Ayrshire and continuing under the registered name of Stewart Speirs Ltd ["sic"] in Paisley, Renfrewshire, from c. 1933 until its demise in the mid to late 1930s.
 Like the Glasgow firm of Alexander Mathieson & Sons, Spiers benefited hugely from the thriving industries on the Firth of Clyde in the latter half of the nineteenth century.
The Krefeld Pinguine (Krefeld Penguins) are an ice hockey team in the Deutsche Eishockey Liga.
 Their home ice is in Krefeld, North Rhine-Westphalia, Germany at the König Palast.
 Founded first in 1936 by Willi Münstermann, the pro team became a limited liability company in 1994 and joined the top tier Deutsche Eishockey Liga.
 In their history they have won the German championship in 1952 and 2003.
Andrew Bryan (1737–1812) founded First Bryan Baptist Church, affectionately called the Mother Church of Black Baptists, and First African Baptist Church of Savannah in Savannah, Georgia, the first black Baptist churches to be established in America.
 Bryan was the former slave of Jonathan Bryan.
In the 1923 World Series, the New York Yankees beat the New York Giants in six games.
 This would be the first of the Yankees' 27 World Series championships (as of 2016).
 The series was not played in a 2–3–2 format: as with the previous two Series (where both clubs had shared the Polo Grounds) the home field alternated each game, though this time it involved switching ballparks, as the first Yankee Stadium had opened this season.
The Syracuse Triad is the name given to the three women's sororities founded at Syracuse University.
 Alpha Phi was founded first in 1872 by 10 of the original 20 women admitted into Syracuse University.
 Gamma Phi Beta came along two years later in 1874 and with it came the term "sorority," which was coined at the time of its founding.
 (Prior to that, women's Greek-letter organizations used the term "women's fraternity," since no more appropriate term existed.)
 Alpha Gamma Delta completed the triad in 1904.
It was founded first in 1962 as a branch from the University of Alexandria with the faculty of Medicine only and then it became an independent university named University of the Middle Delta in 1972.
 It had at that time Medicine, Science, Agriculture and Education faculties.
 Then, its name was changed into Tanta University in 1973.
First Descents is a charitable non-profit organization that gives a free outdoor adventure experience trip to young adults who are fighting cancer.
 Brad Ludden, a professional kayaker, founded First Descents in 2001 at age 20.