National Association of Professional Base Ball Players

The National Association of Professional Base Ball Players (NAPBBP), or known simply as the National Association (NA), was founded in 1871 and continued through the 1875 season. It succeeded and incorporated several professional clubs from the previous National Association of Base Ball Players (NABBP) of 1857–1870, sometimes called "the amateur association"; in turn several of its clubs created the succeeding National League of Professional Baseball Clubs in 1876. Later shortened to the National League, it joined with the American League of Professional Base Ball Clubs in 1901 to form Major League Baseball (MLB).

National Association of Professional Base Ball Players

The National Association of Professional Base Ball Players (NAPBBP), or known simply as the National Association (NA), was founded in 1871 and continued through the 1875 season. It succeeded and incorporated several professional clubs from the previous National Association of Base Ball Players (NABBP) of 1857–1870, sometimes called "the amateur association"; in turn several of its clubs created the succeeding National League of Professional Baseball Clubs in 1876. Later shortened to the National League, it joined with the American League of Professional Base Ball Clubs in 1901 to form Major League Baseball (MLB).