No comment on the quality (because I haven't looked), but you could try here.
This I found through the fine folks at SIL (formerly the Summer Institute of Linguistics), whose resources you should check for typography resources on any endangered language.
Thank you! I have that already, but I have problems with the font format. I'm not able to load it, so that I can work with it. I'll try it now with Fontlab.
And I try SIL.