The above seems to indicate that development of long-range rockets cannot have progressed far. Some confirmation of this deduction might be obtained if it could be shown that the supply of raw materials for the construction of long-range rockets would interfere with the quality of other equipment supplied to the German armed forces. Meanwhile, it is too early to state with confidence that this matter may be disregarded. A N N E X 'B'. 1. Reliability of Reports already submitted. Source 'A'. Numerous reports have been received from this source which have usually proved reliable.