The work Ecological notes on Machair-land, circa 1952, may have been the basis Kenneth J. F. Park's intended Ph.D.
It comprises c. 200 pages of manuscript text, including numerous figures, graphs, illustrations, and maps. There are 9 large sepia photographs (laid on card). The text discusses climatic factors, geological and edaphic factors (influenced by soil), agriculture, distribution of Machair-land, the South Harris and Ensay Machairs, Manish Machair (Ensay); Hargabost / Northton / Luskentyre (all South Harris), primary succession, erosion and secondary succession, along with an introduction and summary.