Instructions for a class paper to identify the protoconsonant for cognate sets in Pacific Coast Athabaskan languages. Languages compared are, by Haas' description: Hupa, Mattole, Wailaki, Kato/Cahto, "Euchre Creek" [Tututni],Coquille, Tolowa, Chasta Costa, (Upper) Umpqua and Galice. There are 6 pages of cognate sets, annotated with Haas' answers.