The Territorial Force Nursing Service 1908–1921: available here.
scotlandspeople.gov.uk
Births and deaths information available at the General Register Office for Scotland, Scotlands People Centre in Edinburgh, and also at Scotland's People.gov.uk. She was christened 'Elizabeth Saunderson' but the additional 'u' seems to be a clerical error.
Haldane, Elizabeth S. (1937). From one century to another: the reminiscences of Elizabeth S. Haldane. London: Alexander Maclehose & Co. p. 73. OCLC2174488.