No competitive football was played between 1915 and 1919 due to the First World War. During the war the club played in the Lancashire section of the non-competitive War Leagues
D The club withdrew from the FA Cup during the qualifying rounds in both 1890–91 and 1895–96. The reasons for withdrawal are unclear.
E The Subsidiary Tournament was a round-robin competition played following the completion of league fixtures.
F The 1939–40 English football season was abandoned in early September and all results annulled, after only three matches had been played due to the Second World War.
G Unplaced. 18 matches or more were required for a team to be placed.
H The FA Cup was contested in 1945–46 but the Football League did not resume until the following season.
K Up until 1992, the top division of English football was the Football League First Division; since then, it has been the FA Premier League. At the same time, the Second Division was renamed the First Division, and the Third Division was renamed the Second Division.