Atlas Obscura: The Mystery of a Medieval Blue Ink Has Been Solved by Isaac Schultz
Turns out it was hiding in plain sight by the side of a Portuguese road.
Tuesday, April 21, 2020
Soft-back version of 'Integralism: a manual of political philosophy' now available for pre-order in the US, priced $31. https://t.co/pZ466ZSHfU— Fr Thomas Crean OP (@crean_fr) April 13, 2020