This is a new comprehensive  book on Pawpaws,  Release is May, 4, 2021

210 pages, with lots of illustrations and pictures covering all aspects of growing pawpaws, including basic botany, flowering and fruit harvest , site design and choosing trees, orchard maintenance, and marketing.  There is also a chapter on pest and diseases,  and a very large chapter on cultivars, with descriptions and history of many of the known cultivars.

Blake Cothron, the author,  is the owner of a USDA Certified Organic research farm, orchard, and edible plant nursery with special emphasis on Pawpaws.

Excellent reviews by Neal Peterson,  and others.