Augustus | Augustus John | Augustus Saint-Gaudens | Augustus Pugin | Augustus II the Strong | Augustus De Morgan | Charles Augustus FitzRoy | F. Augustus Heinze | Ernest Augustus I of Hanover | Ernest Augustus I, Duke of Saxe-Weimar-Eisenach | Sigismund II Augustus | Augustus III of Poland | Augustus (honorific) | Seimone Augustus | Saint-Gaudens, Haute-Garonne | George Augustus Eliott, 1st Baron Heathfield | Frank Augustus Miller | Augustus Pablo | Augustus Noble Hand | Saint-Gaudens | Prince Augustus Frederick, Duke of Sussex | Prince Augustus Ferdinand of Prussia | Frederick Augustus II, Grand Duke of Oldenburg | Frederick Augustus II | Fort Augustus | Ernest Augustus Taylor | Charles Augustus Wheaton | Augustus Leopold Kuper | Augustus Keppel, 1st Viscount Keppel | Augustus Jessopp |
Elected a member of the American Antiquarian Society, 1974, and the Massachusetts Historical Society, 1977, MacNeil served as a trustee of the Augustus Saint-Gaudens Historic Site, Cornish, New Hampshire, since 1975.