The collection documents social aspects of the Bulmer family, rather than its business enterprise, and relates principally to Edward Frederick Bulmer and his wife Sophie Friederike Bulmer. The papers include correspondence between members of the Bulmer family and letters received by them, a range of personal papers, photographs, texts of speeches made by E.F. Bulmer and others, and printed material. Many of the biographical and genealogical sources were compiled by Robert Harold Bulmer, their son.