Alfred William Howitt,
Native Tribes of South-East Australia
(1904)
“ Where two large groups of tribes which speak different languages meet there will be found a tract of country where the language is composed of both. For instance, the Kamilaroi language extends northwards to the Gwydir River. To the west of the Upper Darling River and extending to the Culgoa it is Wollaroi. Between the Darling and the Gwydir the language is mixed Kamilaroi and Wollaroi. Similarly between the Bogan and the Kamilaroi boundary, which runs north-westward from Wonabarabra to the junction of the Peel River and the Darling, the language is a mixture of Kamilaroi and Wiradjuri. ”
