Consists predominantly of records pertaining to the military career of Ronald Reed Lilley. There is also scant records pertaining to Lilley's father, Charles W. Lilley, and his brother, C. J. Lilley. Both brother and father were also involved with the Canadian military.
The collection is divided into 6 series:

1. Biographical Information
2. Material Relating to service in WW II
3. Material Relating to his military career from 1954 - 1963
4. Material Relating to his career in the Canadian School of Infantry
5. Photographs
6. Books and Journals