In our forthcoming book Green Fire - A History of Irish Magic (Summer 2023) we discuss in some detail W. B. Yeats and his Celtic Order.
There will be much new material, drawing on unpublished texts and objects in public and private collections. The article The Lost Talisman (see below) is one of the discoveries made by Sally North when researching in the National Library of Ireland.
The Life and Works of W. B. Yeats exhibition is at the National Library for the foreseeable future. It is a wonderful exhibition, with many interesting and beautiful items from all facets of Yeats's life.