If you have any interest in the art and carving of the Pacific Northwest native cultures, it's worthwhile to learn what you're looking at. Partly because there are 4 distinctively different regional artistic styles. Most native artists and carvers (maybe one and the same!) keep to their heritage style.
The art and carvings are built out of design elements which are assembled into all sorts of animals and mythological creatures, many of which can slide back and forth = transform.
1. Learning By Designing. vols I (2001) & II (2002). Jim Gilbert & Karin Clark. Raven Press.
ISBN 0-9692979-3-9 and 0-9692979-4-7.
These describe and compare the 4 regionally distinct artistic styles. There are many useful drawing lessons.
2. Looking At Totem Poles. 1993. Hilary Stewart. UWash Press. ISBN 978-0-295-97259-6.
Very carefully drawn illustrations of some 60 poles that you could search out to look at. Detailed descriptions of every figure on every pole.
3. Looking At Indian Art of the Northwest Coast. 1979. Hilary Stewart. UWash Press.
More photographically illustrated with many comparative descriptions of designs and design elements in both 2D art and 3D carvings.
4. Northwest Coast Indian Art, An Analysis of Form. 1965. Bill Holm. ISBN 978-0-295-95102-7.
A fairly technical discussion of the design "rules" in the shapes of the design elements, written and illustrated by a master native artist, Bill Holm.
5. Cedar: Tree of Life to the Northwest Coast Indians. 1984. Hilary Stewart.
ISBN 978-1-55054-406-0. Very well illustrated discussion of the multipurpose values of the western red cedar, still abundant along the coast and in the ICH zone of the Rockies where I live.
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Now to get serious. What is a skilled and famous artist's "take" on the art and carvings of the Pacific Northwest? Read anything and everything about Emily Carr (1871 - 1945). In particular, the excerpts from her notes and sketches:
The Sketchbooks of Emily Carr: Seven Journeys. 2002. Doris Shadbolt. Douglas & McIntyre.
ISBN: 0-295-98246-2. Great insights into what she saw on her northern painting expeditions.
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There are lots of others, coffee table picture books which leave you as ignorant as you were.
All these books are available in paperback and as such, won't break the bank. Bear in mind that the artists and carvers began, apprenticed to an uncle or grandfather, as children. You're looking at lifetimes of skills.