These comprise committees of ministers, of officials, and of mixed membership, both Federal and inter-governmental. The material at MSS. Welensky Papers 155/1-3 and 158/4 originates in Welensky's own filing system (or is his own copy deriving from membership of a particular committee). The Economic and Development Committee was established in 1959, and the papers survive for that year alone, although the committee continued to meet thereafter. Other committees such as that for 'Special…