tux psd graphic files

i'm not sure if this is an ok thing to post to the list but since i've come up with nothing searching the web i guess i'll take a shot here. i'm looking for a layered psd file of tux the penguin. you know, the kind without that hideous blue anti-aliasing around it? i can find flattened gifs and jpegs all over the place but no clean psd's do they even exist? does anyone know where to find them?