Sparks also played a central role in helping orient the park's design and development in his capacity as chairman of the Advisory Committee on Gatineau Park from 1947 to 1954. He did so by, among other things, writing the 1949 Report of the Advisory Committee on Gatineau Park and – perhaps most importantly – the 1952 Report on a Master Plan for Development of Gatineau Park (the latter being, in effect, the first comprehensive master plan for the park, though the NCC has failed to acknowledge this).