The fonds consists of correspondence from 1929 to 1990; biographical data/information from 1921 to 1991; literary works from 1938 to 1984; photographs from 1898 to 1984; interviews and talks/speeches given from 1942 to 1984; newspaper clippings from 1920 to 1990; newsletters and theatre souvenirs from 1922 to 1987.

The fonds consists of family papers, genealogical material, manuscripts and correspondence documenting the history of the Warren family in England. Some of the family members represented in the fonds are Reverend Dawson Warren, Falkland G.E. Warren, and Charlotte Jackson. The fonds also includes biographical information about Harry Warren and copies of his publications to 1978.

Fonds consists of records generated by the Department of Soil Science in the course of its administrative and academic activities, and by Dr. Rowles relating to his academic, professional, and personal activities. They contain information regarding the administration of the Department; courses offered by the Department; committees with which Dr. Rowles was involved, in particular those which he chaired; his extension courses, workshops, lectures, and other outside activities; and some personal correspondence.