Question: Which magazine was first published earlier, The Chronicle of Philanthropy or Skeptic?

Passages:
"Dallas Blues", written by Hart Wand, is an early blues song, first published in 1912.  It has been called the first true blues tune ever published.  However, two other 12-bar blues had been published earlier: Anthony Maggio's "I Got the Blues" in 1908 and "Oh, You Beautiful Doll", a Tin Pan Alley song whose first verse is twelve-bar blues, in 1911.  Also, two other songs with "Blues" in their titles were published in 1912: "Baby Seals Blues" (August 1912), a vaudeville tune written by Franklin "Baby" Seals, and "The Memphis Blues", written by W.C. Handy (September 1912).  Neither, however, were genuine blues songs. Tales of the Jazz Age (1922) is a collection of eleven short stories by F. Scott Fitzgerald.  Divided into three separate parts, according to subject matter, it includes one of his better-known short stories, "The Curious Case of Benjamin Button".  All of the stories had been published earlier, independently, in either "Metropolitan Magazine (New York)", "Saturday Evening Post", "Smart Set", "Collier's", "Chicago Sunday Tribune", or "Vanity Fair". Philanthropy is a quarterly magazine published by the Philanthropy Roundtable.  First published as a newsletter in 1987, "Philanthropy" became a glossy magazine in 1996.  The magazine's primary focus is philanthropy, with a special interest in donor intent and philanthropic freedom.  The magazine is headquartered in Washington, D.C. The Porcupine is a short novel by Julian Barnes originally published in 1992.  Before its British release date the book was first published earlier that year in Bulgarian, with the title "Бодливо свинче" (Bodlivo Svinche) by Obsidian of Sofia. Letters from My Windmill (French: "Lettres de mon moulin" ) is a collection of short stories by Alphonse Daudet first published in its entirety in 1869.  Some of the stories had been published earlier in newspapers or journals such as "Le Figaro" and "L'Evénement" as early as 1865. The Winter Knights is a children's fantasy novel by Paul Stewart and Chris Riddell, first published in 2005.  It is the eighth volume of "The Edge Chronicles" and the second of the "Quint Saga" trilogy; within the stories' own chronology it is the second novel, preceding the "Twig Saga" and "Rook Saga" trilogies that were published earlier. Clash of the Sky Galleons is a children's fantasy novel by Paul Stewart and Chris Riddell, first published in 2006.  It is the ninth volume of "The Edge Chronicles" and the third of the "Quint Saga" trilogy; within the stories' own chronology it is the third novel, preceding the "Twig Saga" and "Rook Saga" trilogies that were published earlier. Skeptic, colloquially known as Skeptic magazine, is a quarterly science education and science advocacy magazine published internationally by The Skeptics Society, a nonprofit organization devoted to promoting scientific skepticism and resisting the spread of pseudoscience, superstition, and irrational beliefs.  Founded by Michael Shermer, founder of the Skeptics Society, the magazine was first published in the spring of 1992 and is published through Millennium Press. The Chronicle of Philanthropy is a magazine that covers the nonprofit world.  Based in Washington, DC, it is aimed at charity leaders, foundation executives, fund raisers, and other people involved in philanthropy.  The Chronicle of Philanthropy publishes 12 issues a year while updating its Web site daily.  It was founded in 1988 by editor Phil Semas and then managing editor Stacy Palmer.  It is owned by The Chronicle of Higher Education Inc., which also publishes "The Chronicle of Higher Education", a weekly newspaper covering colleges and universities. The Curse of the Gloamglozer is a children's fantasy novel by Paul Stewart and Chris Riddell, first published in 2001.  It is the fourth volume of "The Edge Chronicles" and the first of the "Quint Saga" trilogy; within the stories' own chronology it is the first novel, preceding the "Twig Saga" trilogy that was published earlier.

Supporting sentences:
 The Chronicle of Philanthropy publishes 12 issues a year while updating its Web site daily.  It was founded in 1988 by editor Phil Semas and then managing editor Stacy Palmer.  Founded by Michael Shermer, founder of the Skeptics Society, the magazine was first published in the spring of 1992 and is published through Millennium Press.