Fonds consists of the papers, photographs, and compiled collections relating to one branch of the Allison Family of Princeton, BC, with predominant coverage of the branch of the family with the surname Thomas. This branch has its genesis with Caroline Allison (1878-1975), daughter of John Fall Allison, who married William Heald Thomas. Their four children, particularly Roy Edward Thomas (1920-1999) are represented in this portion of the family fonds.