Here are the National League ERA, Wins, and Strikeout leaders for 1968.
1968 was the Year of Bob Gibson, and he appears on all 3 cards. His 1.12 ERA is astounding.
The Cubs' Fergie Jenkins is among the leaders in 2 categories. Bob Veale, usually among the strikeout leaders, is 3rd in ERA.
In his second season since replacing the retired Sandy Koufax in the Dodgers' rotation, Bill Singer was 3rd in strikeouts.