Ive spent a lot of time trying to find the title deeds for Dingley Dell, but cant find anything prior to 1922.
This is what I discovered on Trove:
1864 March 8th Gordon purchased Dingley Dell.
Title Deeds.
1921 Sept. 21st Preliminary meeting of the Dingley
Dell Committee held. Minute Book.
1921 Oct. 3rd Dingley Dell Restoration Committee
met S.A. Government representative. Minute
Book.
1922 Feb. 17th Government of South Australia
purchased "Dingley Dell." Title Deeds.
1864 Mar. 8 Dingley Dell transferred by George Randall (Transfer No. 7076 Title Deeds) to Adam
Lindsay Gordon, Gentleman. 101 Acres Approx)
(J.K. Moir Border Watch (Mount Gambier,Thursday 2 December 1937, page 1)
Ive uploaded the Certificate of Title that I could find.