The Isabella quarter or Columbian Exposition quarter was a United States commemorative coin struck in 1893.
 Congress authorized the piece at the request of the Board of Lady Managers of the World's Columbian Exposition.
 The quarter depicts the Spanish queen Isabella I of Castile, who sponsored Columbus's voyages to the New World.
 It was designed by Bureau of the Mint Chief Engraver Charles E. Barber, and is the only U.S. commemorative of that denomination that was not intended for circulation.
Thomas Gatch Melish (October 28, 1876 – February 15, 1948) was a Cincinnati entrepreneur and coin collector.
 In the 1930s, Melish was responsible for two United States commemorative coin issues, the Cincinnati Musical Center half dollar and the Cleveland Centennial half dollar.
€2 commemorative coins are special euro coins minted and issued by member states of the eurozone since 2004 as legal tender in all eurozone member states.
 Only the national obverse sides of the coins differ; the common reverse sides do not.
 The coins typically commemorate the anniversaries of historical events or draw attention to current events of special importance.
 In 2007, 2009, 2012 and 2015, there were common commemorative coins with only different national inscriptions.
 Up to 2015, two hundred and thirty variations of €2 commemorative coins have been minted – six in 2004, eight in 2005, seven in 2006, twenty in 2007 (including thirteen versions of the common issue), ten in 2008, twenty-five in 2009 (including sixteen versions of the common issue), twelve in 2010, sixteen in 2011, thirty in 2012 (including seventeen versions of the common issue), twenty-three in 2013, twenty-six in 2014 and forty-seven in 2015 (including nineteen versions of the common issue).
 Finland, Luxembourg, San Marino and the Vatican City are the only countries to have released at least one national commemorative coin every year.
 Cyprus has not minted any national commemorative coin yet.
The Freedom Tower Silver Dollar is a "one dollar" coin minted under license of the Commonwealth of the Northern Mariana Islands (CNMI) in 2004, although the CNMI does not have legal authority to issue or authorize currency.
 Despite vague statements in advertisements, it is not issued by the United States Mint and is not considered legal tender, nor is it considered non-circulating legal tender.
 The CNMI receives royalty fees from proceeds of the sale of the coin.
 The coin is actually minted by SoftSky, a Wyoming commemorative coin maker.
The McKinley Birthplace Memorial dollar was a commemorative coin struck in gold by the United States Bureau of the Mint in 1916 and 1917, depicting the 25th President of the United States, William McKinley.
 The coin's obverse was designed by Mint Chief Engraver Charles E. Barber, and the reverse by his assistant, George T. Morgan.
 As McKinley had appeared on a version of the 1903-dated Louisiana Purchase Exposition dollar, the 1916 release made him the first person to appear on two issues of U.S. coins.
The Cincinnati Musical Center half dollar or Cincinnati Music Center half dollar is a commemorative 50-cent piece struck by the United States Bureau of the Mint in 1936.
 Produced with the stated purpose of commemorating the fiftieth anniversary of Cincinnati, Ohio as a center of music, it was conceived by Thomas G. Melish, a coin enthusiast who controlled the group which was allowed to buy the entire issue from the government, and who resold the pieces at high prices.
The Seated Liberty dollar was a dollar coin struck by the United States Mint from 1840 to 1873 and designed by its chief engraver, Christian Gobrecht.
 It was the last silver coin of that denomination to be struck before passage of the Coinage Act of 1873, which temporarily ended production of the silver dollar for American commerce.
 The coin's obverse is based on that of the Gobrecht dollar, which had been minted experimentally from 1836 to 1839.
 However, the soaring eagle used on the reverse of the Gobrecht dollar was not used; instead, the United States Mint (Mint) used a heraldic eagle, based on a design by late Mint Chief Engraver John Reich first utilized on coins in 1807.
The Maine Centennial half dollar is a commemorative coin struck in 1920 by the United States Bureau of the Mint.
 It was sculpted by Anthony de Francisci, following sketches by an unknown artist from the U.S. state of Maine.
The Cleveland Centennial half dollar is a commemorative United States half dollar struck at the Philadelphia Mint in 1936 and 1937, though all bear the earlier date.
 Sometimes known as the Cleveland Centennial Great Lakes Exposition half dollar, it was issued to mark the 100th anniversary of Cleveland, Ohio, as an incorporated city, and in commemoration of the Great Lakes Exposition, held in Cleveland in 1936.
The United States Commemorative Coin Act of 1996 (Public Law 104-329) is a United States federal law which established a commemorative coin program within the United States Mint in 1996.
 In addition, the law specifically authorized commemorative coins to observe the 150th anniversary of the death of Dolley Madison, to honor George Washington, the 125th anniversary of the establishment Yellowstone National Park, and the 50th anniversary of Jackie Robinson's racial desegregation of Major League Baseball.
 It also established commemorative coin fundraising programs for the Black Revolutionary War Patriots Memorial, Franklin Delano Roosevelt Memorial, and National Law Enforcement Officers Memorial.

Question: At what mint was the commemorative coin struck which was minted in 1936 and 1937 and for whom Thomas G. Melish receives credit?
Answer: Philadelphia Mint