Memoranda, notes, and reports. Subjects include general agricultural production, export crops, Royal Commission Report, land utilisation, and rail transport.

Correspondence, manifestos, and press cuttings. Subjects include E.S. Grogan's election as Member for Ukamba in 1939. Manifestos include F. O'B. Wilson (1939); Joyce, Grogan, E.H. Wright, Gerald Anderson (1944); and Charles Markham (1956).

Correspondence, reports, and notes of national relevance and for Joyce's own information. Subjects include grassland farming in marginal areas, bush control, soil samples, and grass species. Correspondents include the Pasture Research Officer, Senior Agricultural Chemist, and District Agricultural Officer.

Correspondence and notes, largely about the development of secondary industries, including leather working and spinning and weaving.

Correspondence, notes, memoranda, and reports. Subjects include hydro-electric power, earth dams, the Water Resources Authority, Machakos water supply, the Land and Water Preservation Committee, and the East African Power and Lighting Company. Correspondents include E.D. Rutherford, Rt. Hon. Col. Oliver Stanley (Secretary of State for the Colonies), J. Delap, and F. Cavendish-Bentinck (Member for Agricultural and Natural Resources).

Correspondence, reports, blueprint maps, and press cuttings about a case arising from a claim by the Taita people in 1943 to land that had been leased from the Crown by the Teita Concessions Sisal Company in 1928. Correspondents include the Hon. C.M. Rennie (Acting Governor of Kenya), the Consulting Geologist, the Director of Public Works, and the Kenya Sisal Growers' Association.