Shaded Relief Archive This website offers an archive of scanned manual shaded relief for use by digital mapmakers. Much of the relief art found here is georeferenced and customized to fit modern drainage vectors. All shaded relief data are free and useable for commercial and other purposes. (tags: content maps shadedrelief)

CSS: Innovative Techniques and Practical Solutions – Smashing Magazine (tags: contentn css3)

TileMill | Home TileMill is a modern map design studio powered by open source technology. (tags: software opensource maps tilemill)