I've just seen an ad for a book called "The Sun in the Church: Cathedrals as Solar Observatories" by J.L. Heilbron, Professor and Vice Chancellor Emeritus, UC Berkeley, and Senior Research Fellow, Worcester College, Oxford. It's gotten pretty good reviews, including a nice blurb by Owen Gingerich of Harvard. If anyone has read it, I'd like to hear about it before spending $35.
