I was able to get the following tonight at the 2nd Annual Scranton Yankees game.

Butch Wynegar - ball
Alvaro Espinoza - ball
Rafael Chaves - team jersey
Chris Britton - 8x10
Dan Giese - team jersey
Alan Horne - ball
Kei Igawa - card
Jeff Marquez - ball
Heath Phillips - card
Edwar Ramirez - card
Scott Strickland - team jersey
Jose Veras - generic SWB pic
Steven White - card
Chad Moeller - team jersey
Bernie Castro - team jersey
Eric Duncan - card
Alberto Gonzalez - card
Nick Green - team jersey
Juan Miranda - ball
Cody Ransom - team jersey
Brett Gardner - ball
Jason Lane - card
Greg Porter - team jersey

That makes 41 signatures on the jersey. I still have some work to do on it but it is filling up fast.