Rachel Koopmans’ work on stained glass windows in Canterbury Cathedral has resulted in the publication of a fast-selling booklet in the Cathedral: The First Miracle Window: Becket’s Earliest Pilgrims in Canterbury’s Stained Glass, with digital reconstructions and an afterword by Léonie Seliger (Canterbury Cathedral Enterprises, 2022): https://www.cathedral-enterprises.co.uk/Shop/Books/Books-on-Kent-Canterbury-and-the-Cathedral/The-First-Miracle-Window
The booklet has also been reviewed: https://www.vidimus.org/issues/issue-139/reviews/the-first-miracle-window-beckets-earliest-pilgrims-in-canterburys-stained-glass/