The Third Fifty Years of the Arnold Arboretum - Arnold Arboretum
Remembering Stephen Spongberg - Arnold Arboretum
Botany Archives - Page 3 of 7 - Arnold Arboretum
First Sino-American Botanical Expedition - Arnold Arboretum
History Archives - Page 3 of 7 - Arnold Arboretum
Botany Archives - Page 3 of 7 - Arnold Arboretum
Jon Hetman Archives - Arnold Arboretum
First Sino-American Botanical Expedition - Arnold Arboretum
Botany Archives - Page 3 of 7 - Arnold Arboretum
Lisa E. Pearson Archives - Page 2 of 3 - Arnold Arboretum
STEPHEN SPONGBERG Obituary (1942 - 2021) - Westwood, MA - Boston Globe
Curation Archives - Arnold Arboretum
The Polly Hill Arboretum » Blog Archive » Remembering Stephen A. Spongberg, PHA's First Director
Michael S. Dosmann Archives - Arnold Arboretum