[5] After the 1878 season, Cap Anson signed Flint and his Indianapolis teammate Orator Shafer to the Chicago White Stockings of the National League.

[6] Flint remained with Chicago for the rest of his playing career, spending eleven seasons almost exclusively as a catcher.

[2] Flint and Shafer had incurred significant debts during their time with Indianapolis, and when the White Stockings traveled back to that city in June 1879, the sheriff was waiting on them.

The Chicago Tribune noted that as a result of an attempt to put the thumb back in place, "the flesh was badly lacerated.

[10] Flint's financial difficulties continued as his career progressed, worsened by fines he incurred for his drinking and rowdy behavior.

His Chicago teammate Billy Sunday said he thought Flint's alcohol use was an attempt to deal with the pain he endured while playing catcher with his bare hands.

[5] In 1883, a man in Florida wrote to National League president Albert Spalding and told him that Flint and pitcher Ned Williamson refused to pay him back for a loan.

[7] In 1885, Flint was still the primary catcher for the White Stockings, but he did not appear in as many games as the team's star pitcher, future Hall of Famer John Clarkson.

[8] Both the 1885 and 1886 White Stockings won the National League, and in both years they faced the champions of the American Association, the St. Louis Browns, in a pre-modern World Series.

[8] Flint married Eva de la Motta, the ex-wife of minstrel show performer Lew Benedict, in 1879.