looking for map sprite sets

[paradoxharbinger]

i'm looking for some sprite sets for mapmaking. i can't seem to find anything much out on the internets and i am really quite terrible at drawing sprites. i would basically be using the sprites to demo the capabilities of my map generator, which can see screenshots and discussion of here and here and also at my site, which is linked in my sig, though it is frightfully out of date.

if you should feel so inclined to help out, here are the guidelines for sprites:

• pure black is transparent
• do not use pure white, this color is used to mark capitals
• extra black space around a sprite will change the look of a map. the total dimension of the image is used for calculating how far sprites are placed from one another
• image format is 24 bit uncompressed tga

the mapgen is designed so that the user can modify pretty much every aspect of it from sprites and background colors to dimension, wrapping and terrain proportions.