I have started the fun project of a lichen dye pot and in today's podcast I talk a little about the history of lichen dyeing, and how and where I collected my lichens.

There's also a TdF2017 update at the end of the podcast.

I had four books in my spinning library to use as references for this information. 

The main sources were from the same author, Karen Casselman.  The books are: Craft of the Dyer Colour from Plants and Lichens and Lichen Dyes The New Source Book both published by Dover Press.

Two other books that mention dyeing with lichens are:

Your Yarn Dyeing by Elsie G Davenport

Natural Dyes for Spinners & Weavers by Hetty Wickens