The collection contains articles, notes, ministry and correspondence relating to the 'Exclusive Brethren' in the middle of the twentieth century. There are numerous circulars which provide insights into Brethren thought, along with the personal testimony of Gordon Simmonds, who broke with the Brethren in 1965 and continued for some time afterwards to reflect upon Brethren beliefs and his personal responses.
The collection is of value to anyone interested in the thought and experiences of the 'Exclusive' wing of the Brethren movement in the twentieth century. The separatist nature of the Exclusives mean that material of this type is not readily available elsewhere.