Antique Powderglass Beads From West AfricaJamey Allen 

From the mid-19th century through the early-20th century a corpus of glass beads was manufactured, and possibly made for the use of elite persons in Ghana, West Africa.
Wild Beads of Africa: Old Powderglass Beads from the Collection of Billy Steinberg, 2019 by Jamey Allen (Author), Billy Steinberg (Editor)
This book provides a view into the most-excellent private collection of this corpus of powderglass beads outside of Africa, and presents a new paradigm related to how they may have been manufactured, and how they compare to other beads of ongoing powderglass manufacture among Krobo people.