Some books by or about Ernest Wilson

Naturalist in Western China (Plant Hunter Series/2 Volumes in 1)

Plant Hunting (Volume I): v. I

Plant Hunting (Volume II): v. II

Chinese Wilson by Roy Briggs

Plantae Wilsonianae; an enumeration of the woody plants collected in western China for the Arnold Arboretum

China Mother of Gardens

Aristocrates Of The Garden

Smoke That Thunders
Online resources

Lisa Pearson, head of the Arnold Arboretum Horticultural Library and Archives has written two stories about Wilson's expeditions which you can access here