I recently was able to get a hold of Dyes From American Native Plants through an interlibrary loan. I was quite impressed by the number of plants they cover! The book is laid out very nicely with some basic dyeing methods in the front and a bit about the how dyeing works, then we get to the good stuff.
Pages and pages of colored chips showing the colors that can be attained, then lists of the plants and how to get the colors (which mordants to use, whether to use heat or decomposition)—all the nitty gritty details. Oh, and which part of the plant to use! I found that extremely helpful. It’s one thing to say, “silver maple makes X color,” but do you have to stuff the entire tree in the pot?
Then, after they go through by color, they go through again by plant. Most of the plants have a color photograph to help you recognize them. I personally wish they had listed the plants by region instead of just saying “this plant ranges from . . .” But the information is presented very concisely. It’s not at all a chatty book. Very straightforward, and it tells you what you need to know.