These seem to be squirreled away on the website in the “media releases” section at the Smithsonian! It is well worth getting the high-resolution images. There is one solid, NWC art page here (from where the lovely Cowichan spindle whorl to the left is from) but additionally here are high resolution pictures of:
an Alutiiq (Koniag) hunter’s hat, ca. 1950 Kodiak Island, Alaska (Spruce root, paint, glass beads, dentalium shells, wool cloth, sea lion whiskers National Museum of the American Indian, Smithsonian Institution Image: 6/9253)
Quinalt woman’s dentalia breastplate ca. 1880 Washington state (Hide, dentalium shells, glass beads, cordage National Museum of the American Indian, Smithsonian Institution Image: 2/7703)
Tlingit Rattle, ca. 1880 Alaska (Alder or maple wood, hide National Museum of the American Indian, Smithsonian Institution Image: 8/1650AQ)
Raven Steals the Sun (in blown glass! by Preston Singletary (Tlingit) Seattle, Washington, 2003)
Another Tlingit Rattle, ca. 1880 Alaska Alder or maple wood, hide National Museum of the American Indian, Smithsonian Institution Image: 8/1650BF
(Confusingly labelled) Niska Tsimshian Headdress – Tlingit man’s frontlet headdress, ca. 1870 Collected at Nass River, British Columbia, Canada Hide, alder or maple wood, ermine skins, abalone, sea lion whiskers, wool cloth, eagle down, paint National Museum of the American Indian, Smithsonian Institution Image: 9/6739
Wallawalla men’s leggings, ca. 1870 Washington state Cornhusk, hemp twine, wool yarn, wool cloth, cotton cloth, hide, rabbit skin, silk ribbon National Museum of the American Indian, Smithsonian Institution Image: 10/8091
Kwakwaka’wakw (Kwakiutl) mask, ca. 1880 Cape Mudge, Vancouver Island, British Columbia, Canada Red cedar, paint, hide, iron nails, twine
Aleut painted wooden hunting hat with sea lion whiskers, ivory, and glass bead decoration, Aleutian Islands, Alaska, ca. 1850. Photo by Katherine Fogden (Mohawk), NMAI (14/4869)