Cruickshank studied at the University of Otago Dunedin School of Medicine and was the second woman, following Emily Siedeberg, in New Zealand to complete medical school. During World War I she planned the work of the Waimate Red Cross Fund. She died from the 1918 flu pandemic.
In 1923 a memorial statue was shown at Seddon Square in Waimate. The plinth was prepared by Daniel Berry and the statue was carved by William Trethewey. In 1948 the maternity room in Waimate Hospital was named after her.
- Ministry for Culture and Heritage. "Margaret Cruickshank". Retrieved 24 April 2011.
- New Zealand History online. "Margaret Cruickshank memorial". Retrieved 24 April 2011.
- Phillips, Jock. "William Thomas Trethewey". Dictionary of New Zealand Biography. Ministry for Culture and Heritage. Retrieved 24 May 2011.
- Hughes, Beryl. "Cruickshank, Margaret Barnett". Te Ara Dictionary of New Zealand Biography. Retrieved 24 April 2011.