Mary and Harry Hammon were active members of the community, Mary opened her garden for 15 years, raising thousands of dollars for Blue Mountains Hospital and the Royal Blind Society.

Harry was a member of Katoomba Rotary Club for 40 years and the two were active in a number of committees and projects, including Blue Mountains Chamber of Commerce, Greystanes Children's Home, the New Year's Eve Festival Committee and the local primary and high school.

As a tribute to the people of the Blue Mountains, and in memory of the wonderful people who have worked tirelessly for this beautiful area, Mary Hammon set up Blue Mountains Health Trust to promote the health and well-being of the people who have chosen to live in the Blue Mountains.

The Trust began on 1 May 2002, with a donation by Mary of $150,000.