Roger Ruthen has created a site called pdf-Minstrel which is a labor of love based on his decades of classical training. He creates arrangements specifically for the baritone ukulele. Roger has upgraded, revised and renamed his gifts a few times but each has built on the previous. It is a generous gift. Take a look at these two arrangements:
BAIDIN FHEILIMI PEZZO TEDESCO
The link to PDF MINSTREL is also on the sidebar of the blog.