Jeffrey Gillard is the author of the book "Thick on the Ground" which is about the Gillard families in Australia and their English ancestry back to the 16th century.
Author = Gillard, Jeffrey Joseph, 1926- Title = 'Thick on the Ground' Publisher = [Glen Waverley, Vic.] : J.J. Gillard, 1978. Description = 189p. : ill., geneal.tables, maps, portrs. ; 27cm. ISBN = 0959567305
The author can be contacted by mail at the following address: 6 Mountleigh Court Glen Waverley,Victoria,3150.
Alternatively, you can speak with his wife on: +61 (03) 9561 4562
It appears that there are no spare copies of the book in the market place and any library that's large enough to have a copy usually restricts it to its reading room (not loaning it out) but perhaps a more persuasive individual than I might be able to convince the author to have his work posted on the Internet in .pdf format.
I'm a descendant of a line of Australian Gillards that runs back to England and am happy to discuss further.