aaw_018 December 20, 2018February 5, 2019 Matthew Caulkins, Web Applications Program Manager Previous Next M-23. Ulmus americana Massachusetts (Medfield). St. Edwards elm. Height 60 ft., girth of trunk 17 1/2 ft., spread of branches 90 ft. Photograph by E.H. Wilson, December 19, 1923. All photographs by Ernest Henry Wilson. Copyright © President and Fellows of Harvard College, Arnold Arboretum Archives; all rights reserved.