“On the Law which has Regulated the Introduction of New Species“. Alfred Russel Wallace, 1855.
“On the Habits of the Orang-Utan of Borneo“. Alfred Russel Wallace, 1856.
“Attempts at a Natural Arrangement of Birds“. Alfred Russel Wallace, 1856.
“On the Natural History of the Aru Islands“. Alfred Russel Wallace, 1857.
“Note on the Theory of Permanent and Geographical Varieties“. Alfred Russel Wallace, 1858.
