One of baseball's most famous ballparks was originally built for a Federal League team: Wrigley Field, the home of the Chicago Cubs, began its long life as Weeghman Park, the home of the Chicago Whales.
Marc Okkonen, in his book on the Federal League, referred to Wrigley as a "silent monument" to the failed Federal League experiment.
 Otherwise, few visible remnants were left by the short-lived Federal League.
 The Baltimore entry sold their facility to the Baltimore Orioles of the International League, who renamed it Oriole Park and played there for nearly 30 years before it was destroyed by fire.
The Newark ballpark was also used for minor league ball for a short time.

Washington Park III in Brooklyn, completed after the 1915 season was underway, looked a lot like Chicago's Weeghman Park.
It was used for various sports venues until the end of 1917 and then for storage until Brooklyn Edison Electric bought the property in 1925 and shortly thereafter tore it down.
One wall still stands.

The other Federal League ballparks were demolished quickly, including the home of the Pittsburgh Rebels, Exposition Park, which had been the home of the Pittsburgh Pirates of the National League until they moved into Forbes Field in 1909.

The other "silent monument" to the Federal League is a famous legal decision.
 In 1922, the Supreme Court ruled in Federal Baseball Club v. National League (brought by the Terrapins, one of the teams which had not been bought out), that Major League Baseball and its constituent leagues were primarily entertainment, not conventional interstate commerce, and thus were exempt from the Sherman Antitrust Act.
Though significantly weakened in the 1970s, this exemption remains intact 98 years later; however it has been eroded by subsequent court rulings and legislation regarding issues specific to Major League Baseball.

Of the locations of teams in the Federal League, five currently have major league teams.
Those are Baltimore, Chicago, Kansas City, Pittsburgh and St. Louis.
Brooklyn has a New York–Penn League team, known as the Brooklyn Cyclones. (
The major league Brooklyn Dodgers moved to Los Angeles in 1958, although the New York Mets have been located in the adjacent borough of Queens since 1964.)
Buffalo and Indianapolis have International League teams, the Buffalo Bisons and  Indianapolis Indians, respectively.
Newark had a team, the Bears, in the independent Can-Am League, which folded after the 2012 season.

There is at least one achievement of note that happened in Federal League play.
Eddie Plank, pitching for the St. Louis Terriers, won his milestone 300th game on September 14, 1915, at St. Louis' Handlan's Park, becoming the first 300-game winning left-hander in the history of major league baseball and one of only six as of 2018.
However, that milestone was not acknowledged by Major League Baseball until 1968.

The Federal League was the last serious attempt at creating a "Third Major League" outside the established structure of professional baseball in the U.S. There was one further attempt at creating a third league – the Continental League in 1959 – but its founders had hoped to find their place within the purview of organized baseball.
The Continental League disbanded in 1960 without ever playing a game, making the Federal League the last such league to ever take to the field.

The Federal League features prominently in Ring Lardner's sports humor book You Know Me Al (1916), in which the protagonist pitches for the Chicago White Sox and repeatedly threatens to jump to the Federal League whenever he feels underappreciated or underpaid.
One of baseball's most famous ballparks was originally built for a Federal League team: Wrigley Field, the home of the Chicago Cubs, began its long life as Weeghman Park, the home of the Chicago Whales. Marc Okkonen, in his book on the Federal League, referred to Wrigley as a "silent monument" to the failed Federal League experiment.  Otherwise, few visible remnants were left by the short-lived Federal League.  The Baltimore entry sold their facility to the Baltimore Orioles of the International League, who renamed it Oriole Park and played there for nearly 30 years before it was destroyed by fire. The Newark ballpark was also used for minor league ball for a short time.
Washington Park III in Brooklyn, completed after the 1915 season was underway, looked a lot like Chicago's Weeghman Park. It was used for various sports venues until the end of 1917 and then for storage until Brooklyn Edison Electric bought the property in 1925 and shortly thereafter tore it down. One wall still stands.
The other Federal League ballparks were demolished quickly, including the home of the Pittsburgh Rebels, Exposition Park, which had been the home of the Pittsburgh Pirates of the National League until they moved into Forbes Field in 1909.
The other "silent monument" to the Federal League is a famous legal decision.  In 1922, the Supreme Court ruled in Federal Baseball Club v. National League (brought by the Terrapins, one of the teams which had not been bought out), that Major League Baseball and its constituent leagues were primarily entertainment, not conventional interstate commerce, and thus were exempt from the Sherman Antitrust Act. Though significantly weakened in the 1970s, this exemption remains intact 98 years later; however it has been eroded by subsequent court rulings and legislation regarding issues specific to Major League Baseball.
Of the locations of teams in the Federal League, five currently have major league teams. Those are Baltimore, Chicago, Kansas City, Pittsburgh and St. Louis. Brooklyn has a New York–Penn League team, known as the Brooklyn Cyclones. (The major league Brooklyn Dodgers moved to Los Angeles in 1958, although the New York Mets have been located in the adjacent borough of Queens since 1964.) Buffalo and Indianapolis have International League teams, the Buffalo Bisons and  Indianapolis Indians, respectively. Newark had a team, the Bears, in the independent Can-Am League, which folded after the 2012 season.
There is at least one achievement of note that happened in Federal League play. Eddie Plank, pitching for the St. Louis Terriers, won his milestone 300th game on September 14, 1915, at St. Louis' Handlan's Park, becoming the first 300-game winning left-hander in the history of major league baseball and one of only six as of 2018. However, that milestone was not acknowledged by Major League Baseball until 1968.
The Federal League was the last serious attempt at creating a "Third Major League" outside the established structure of professional baseball in the U.S. There was one further attempt at creating a third league – the Continental League in 1959 – but its founders had hoped to find their place within the purview of organized baseball. The Continental League disbanded in 1960 without ever playing a game, making the Federal League the last such league to ever take to the field.
The Federal League features prominently in Ring Lardner's sports humor book You Know Me Al (1916), in which the protagonist pitches for the Chicago White Sox and repeatedly threatens to jump to the Federal League whenever he feels underappreciated or underpaid.
Federal League