And the answer to the question is….
Okay, first here’s the question again: Name the last National League team among the classic eight (teams that were members of the NL since 1900) to win its first NL pennant and name the last of the classic eight to represent the National League in the World Series, also for the first time?
And the answer is: The St. Louis Cardinals. They won their first NL pennant in 1926, thus becoming the last of the classic eight to win a pennant, and thus, at the same time, becoming the last of the classic eight to represent the NL in the World Series.
Only one person made an attempt to answer the question, Rants, Raves, and Random Thoughts, even if she got the question wrong, by being off by just one team.
Anyway, the other seven NL teams of the classic eight went like this: The Cubs (then the White Stockings) won the very first NL pennant in 1876, and made their first World Series appearance in 1906. The Braves (then the Boston Red Caps) won their first pennant in 1877 and made their first World Series appearance in 1914. The Giants first championship was in 1888 and their first Series appearance was in 1905 (technically it was in 1904, but manager John J. McGraw refused to play against the Boston Americans (now the Red Sox) of the American League, so no Series that year). The Dodgers (then the Bridgegrooms) won their first pennant in 1890 (a year after winning the American Association pennant) and made their first Series appearance in 1916. The Pirates won their first pennant in 1901 and was involved in the first modern World Series of 1903. The Phillies won their first pennant in 1915, and went on to represent the NL in the World Series that same year. The Reds would become the next to last of the classic eight to win the pennant, and thus reach the World Series, in 1919.