Classification
Franz Boas first suggested that Haida might be genetically related to the Tlingit language in 1894, and linguist Edward Sapir included Haida in the Na-Dené language family in 1915. This a position was later supported by others, including Swanton, Pinnow, and Greenberg and Ruhlen. Today, however, many linguists regard Haida as a language isolate. This theory is not universally accepted; for example, Enrico (2004) argues that Haida does in fact belong to the Na-Dené family.
Read more about this topic: Haida Language