These are the 1968 NL leaders in batting average, RBI, and home runs.
Matty Alou appears on the Batting Average leaders card for the 3rd consecutive year. He was 1st on the '67 card, 3rd on the '68 card, and 2nd here. (Felipe was also on the '67 card.)
Willie McCovey is the only one appearing twice. (There always seem to be several players on multiple cards in the AL.)
The Cubs are well-represented with Banks, Santo, and Williams.