The National Library of Australia has an extensive collection of physical and digitised items tracing the history of the Canberra School of Music, ranging from books and journal articles to newspaper clippings, photographs and recordings. Most items are readily available to the public online or by request at the library, however some items may require permission- gained by submitting a item-request/permission form to be submitted either online or at the library itself.
The library’s original catalogue can be accessed here.
The NLA’s national catalogue of digitised items-Trove, also provides links to alternate websites that may be able to supply information that is otherwise unavailable from the library itself.
Trove can be accessed here.
2005 - Ruth Llewellyn interviewed by Larry Sitsky in the Australian Composers oral history project: http://trove.nla.gov.au/work/19721676?selectedversion=NBD28554860