aaw_003 December 20, 2018February 5, 2019 Matthew Caulkins, Web Applications Program Manager Previous Next M-3. Acer saccharum Massachusetts (Charlemont) on the Mohawk Trail. Photographed by E.H. Wilson, October 13, 1923. All photographs by Ernest Henry Wilson. Copyright © President and Fellows of Harvard College, Arnold Arboretum Archives; all rights reserved.