Memorandum on a 250ft aperture steerable radio telescope / A.C.B.Lovell, J.A. Clegg, J.G. Davies, 1951. [Ts., 103pp. incl. photos. Copy of unpublished memorandum known as the 'blue book', written to support an application for funds to build the Jodrell Bank Mk.1 telescope. Includes chapter by Dr. J.A. Clegg on Radio Frequency Design and by J.G. Davies on the Control Mechanism. Stencilled typescript. 2nd copy at RB LOV Q]