Analysis of information sources in references of the Wikipedia article "เมเจอร์ลีกเบสบอล" in Thai language version.
{{cite press release}}: CS1 maint: url-status (ลิงก์)Official MLB history dates to 1876, when the National League began play. According to research by MLB’s official historian, John Thorn, the first run came on April 22 of that year – in the first game of the season, between the Boston Red Stockings, now the Braves, and the Philadelphia Athletics.
{{cite news}}: CS1 maint: url-status (ลิงก์){{cite web}}: CS1 maint: url-status (ลิงก์){{cite web}}: CS1 maint: url-status (ลิงก์){{cite press release}}: CS1 maint: url-status (ลิงก์){{cite web}}: CS1 maint: url-status (ลิงก์){{cite press release}}: CS1 maint: url-status (ลิงก์){{cite press release}}: CS1 maint: url-status (ลิงก์)The strength of the American League grew as an increasing number of National League players opted for the higher salaries offered by the new association. Faced with the prospect of losing many of its best players, the NL chose peace and declared the AL its equal in 1903. This led to a new National Agreement and the birth of the World Series. The American and National Leagues were established as major leagues and all other associations comprised the minor leagues, which fell under the jurisdiction of the National Association of Professional Baseball Leagues.