Crow, Lakota and other Plains tribes have long shared a common sign language that allowed trade and culture to be shared peacefully across the Great Plains.  Dr. Lanny Real Bird (Hidatsa Crow) taught “Lakota-Plains Indian Sign Language” at LSI. This week-long class was filled with adults, elders and children, who learned nearly 200 hand-signals shared by Lakota, Dakota, Crow and other Plains tribes.