From the Linguist List:

The Center for Tribal Studies at Northeastern State University in Tahlequah, OK, announces its 3rd annual Oklahoma Workshop on Native American Languages.
OWNAL focuses on descriptive studies of indigenous languages of the Americas. This weekend workshop takes place at the end of the 38th Annual Symposium on the American Indian (April 14-17, 2010).

The deadline for paper abstracts is January 30, 2010. Here's the Center for Tribal Studies website (no further details on the workshop yet).