Livingstone Letter from Bambarre...
Nearly 140 years ago, famed explorer David Livings... ...n ink from the seeds of a local berry. Now, using spectral imaging technique, researchers had teased out Livingstone... ...he letter — which required state of the art imaging techniques to decipher — helps round out th...
https://www.neatorama.com/2010/07/03/livingstone-letter-from-bambarre/
