Papercut is a wonderful zine library located in Somerville, MA. It is a fully-functioning lending library which serves over 1,000 members, free of charge. Their impressive collection of nearly 13,000 independently published works includes everything from the all-familiar photocopied punk rock zines from the 80's, to hand-crafted personal zines bound together with yarn. They hold free workshops and provide great services for their community. It's been 6 years and they are asking for a little help with funding.
If you're interested in donating (it's not that much!) go to their ChipIn page here.
You can also check out their website and the great things that they do here.