PNG ICO ICNS MORE
Avatars & smileys
3D
Free Large Boss Icon Set
Library, education, librarian
Black
512x512
Music & multimedia
WREN Folder Icon Set
Library
Business & finance
Sunny Day
Campus, kiosk, Library
400x400
Shopping & e-commerce
Vista
Library, texture
Network & communications
BeOS
Folder, Library
128x128