#45 Ron Guidry - threw Louisiana Lightnin' which Kellogg's seems to be calling his fastball. He was mentioned to be a late bloomer since he joined the starting rotation at age 26. Not on the card - websites list Louisiana Lightning as his nickname.
#44 Phil Garner - 12-for-24 in the World Series which was one hit shy of the record.
#43 Larry Bowa - career MLB fielding percentage leader with .981. He also has the season best percentage with .991. Not on the card - Wikipedia notes that he never made his high school baseball team. Bowa is currently ninth all-time in fielding percent as a shortstop with .980. Troy Tulowitzki leads at .985.
#42 Terry Puhl - his hobby is listed as winter sports. He was rejected by the Expos at a special tryout camp in Canada. Not on the card - it's easy to see that he grew up in Canada, eh. (Three Canadian players Got a Kellogg's card)
#41 Rich Gossage - was a starter for the White Sox at age 19. Went through the minors with Bucky Dent.
#40 Fred Lynn - the card mentions his trade to California and the broken toe that affected his 1980 stats.
#39 Ken Singleton - nothing interesting is mentioned.
#38 Tom Seaver - lists bridge as a hobby. He's 12 K's short of 3,000 which will make him the fifth pitcher to do so. Not on the card - I can't imagine a player today listing bridge as a hobby.
#37 Tug McGraw - bats right and throws left. Only 14 players on Kellogg's cards do that and the only non-pitchers are Cleon Jones and Rickey Henderson.