Canvas fabric is not one single, uniform material. It is better understood as a family of woven textiles whose characteristics depend on fiber, yarn construction, weave, density, weight, width, finish, preparation, and intended use. Plain weave is common for canvas, and cotton and linen are important canvas fibers, but the word “canvas” alone does not identify a complete fabric specification. Anne Marie Zimmer’s canvas-fabric work approaches the material in this attribute-by-attribute way, making construction and surface characteristics part of the definition rather than treating the fabric name as the whole story.   [1][2][5] The practical rule:  “canvas” identifies a material family or use category. A useful specification identifies the actual fabric behind the name. 1. Canvas Is a Material Category, Not a Single Recipe One of the easiest mistakes in canvas discussions is to assume that every canvas has the same fiber, weight, weave, hand, surface or finish. It does not...