art:
http://eod.notart.org/sprites/
http://www.panelmonkey.org/
http://tsgk.captainn.net/?d=text&s=NES
http://sprites.planet-megaman.com/

info:
http://www.mmhp.net/


free tiles:
http://jambas-tiles.jambas-emporium.com/mainpage.htm