Correspondence of Redman, A.W. Rodgers and V.C. Reddish, Royal Observatory, Edinburgh. Redman comments on the preliminary agenda for the first A.A.T. Astronomical Working Party meeting on 14 April, and discusses computer algoritH.M.S., a computer specification, the autoguider, dome and windscreen control by computer, and the design of the Cassegrain cage. He makes suggestions to Rodgers for the agenda of the 7 June meeting, and asks Reddish for his views on autoguiders. The correspondence also includes copies of Reddish's letters to Rodgers, commenting on points made by Redman.