I have quite a bit of camphor burl pen blanks. Are you looking for larger pieces. It is kind of hard to find. The majority of the time, you will locate Camphor, but not the burl. I have had numerous emails into people that mill the wood. They often get large hunks of so called burl that turns out to be plain jane. The wood turns beautifully, and is very aromatic.
Cheers,
Fangar