Brenda Newbey has very kindly provided a link to a Western Ground Parrot history blog that focuses on European knowledge and activities regarding the ground parrot prior to 2009. The content of the postings is random, not sequential. There is a search function (top LHS). For example, if the name John Gould is entered for a search, ten postings come up.
The postings are listed in five main categories which may help with a less specific search.