Listed on page 41 in "The Exhibits of the Smithsonian Institution at the Panama-Pacific International Exposition, San Francisco, California, 1915", in section "Arts of the Northwest Coast Tribes".

FROM CARD: "CARVED WITH HERALDIC DEVICES."List in accession record identifies as "#62 - 2 pieces of leather, carved in heraldic designs, from Koutznow Indians, Admiralty Island Chatham Strait, Alaska."

FROM CARD: "TROCADERO 7-85. EXCHANGE-MISS. GRACE NICHOLSON 46 N. LOS ROBLES AVENUE, PASADENA, CALIF. JUNE 20, 1904."Teri Rofkar, Tlingit basket maker, has identified some, but not all, of these mats as of Makah manufacture, 3-2003.Listed on page 44 in "The Exhibits of the Smithsonian Institution at the Panama-Pacific International Exposition, San Francisco, California, 1915", in section "Arts of the Northwest Coast Tribes".In 2023, Paz Nunez-Regueiro, Head of the Americas collection at the Musée du Quai Branly-Jacques Chirac indicated they have a mat listed as old Smithsonian # 20727, Branly catalog number 71.1885.78.330. 20727 may not be the correct number. It is possible this object is actually E20728, since records indicate at least one mat from 20728 went to the Trocadero Museum in 1885.

FROM CARD: "TO HOLD PAPERS."Anthropology catalogue ledger book and list in accession file (this object is # 47) identify this object as acquired in Sitka. It is included on list in accession file of objects "purchased of [Captain] A. [Amos] T. Whitford, Sitka."

Provenience note: locality recorded on the catalogue card is Sitka, however "Admiralty Is." is written on artifact itself by museum cataloguer.