There are 1304 axelrods and 927 books with at least a contributing axelrod author, looks like they may be close, and probably the winner for > 1000 members. I don't have the time to go through 900+ books and get a unique count.
to continue the axelrod theme:
Fudenberg 2 out of 16
Tirole 1 out of 0 (
)
Levine - way too many levines
Nash - way too many Nashes
Von Neumann and Morgenstern are dead, so I guess I will leave them out.