W.H. Whellens Arboriculture as a Hobby Botany, Agriculture TDGNHAS Series II, 23 (1910-11), 284(WARNING very large file size: 16.39 MB)
W.H. Whellens Destructive Forest Insects of Dumfriesshire Entomology, Botany TDGNHAS Series II, 24 (1911-12), 260(WARNING very large file size: 15.37 MB)
