Correspondence with Redman regarding primary mirror testing, including reference to the Hartmann and Wave Stearing Interferometer tests, astigmatism and the stage II specification. There is correspondence between Redman and S.C.B. Gascoigne; a letter from D.S. Brown, 15 March, enclosing 'Test Procedure for Stage Two Acceptance'; a letter from Redman to Gascoigne, 17 March, enclosing the notes on his visit to Sir Howard Grubb, Parsons and Co. Ltd on 3-14 March 1972; a letter from W.A. Goodsell, 22 March, regarding extra payments to Grubb, Parsons and Co.; Redman's letter to Gascoigne, 22 March, concerning a draft contract with Grubb, Parsons and Co. for figuring the mirror to specification II, and concerning GALAXY measurements of the Hartmann plates; letters and cables concerning Gascoigne's visit to the United Kingdom in May; Redman's letter to Gascoigne, 4 April, referring to Hoyle's resignation as Plumian Professor and M. Rees succeeding at Sussex University; a letter from Gascoigne, 5 April, sending his comments on the draft contract for the primary mirror; a letter from W.A. Goodsell, 7 April, enclosing 'Figuring and Testing of Primary Mirror to Specification II', a letter from Redman, 11 April, enclosing a revision of the contract; Redman's letter to D.S. Brown, 17 April, highlighting an error in the contract; and a letter from Gascoigne, 21 April, accepting Redman's invitation to stay with him.