This index has been compled from "Swan River Colony 1836 census " which is a return of the population of the Colony of Western Australia. 
Exclusive of the districts of King George Sound, Augusta, Vasse and the Murray according to the cnesus taken on 1st January 1836.
Hard copy of this document is available int the FHWA library.
It can also be viewed online at: AJCP microfilm reel 301 - CO18