Does anyone know where one can purchase baseball card collection sleeves in the area? I'm looking for the kind that go in a 3-ring binder--the kind that hold 9-12 cards per sheet. Thanks. 

ebay or amazon.com 

If Cambridge isn't too far from you, try Forbidden Planet in the alley between the Grafton and the building where Chili's used to be. 

They have them at the shopette on Lakenheath :-) 

Yeah! Thanks! I didn't think to look at the shopette. Thanks to everyone for responding.