xIT 27.6 Ltr., Col. Herschel D, Mahon, DCS/O, AFSWC, to Cmdr., ARDC, 17 Feb, 1955, subj.: Request for Sampling Aircraft, see App. 28, Ltr., Charles W, Barley, Ch., Acft, Allocations Div., AMC, to Cmdr., AFSWC, 29 Mar. 1955, subj.: Request for B-57D Aircraft, see App. 29.6 Ltr., Maj. Richard P, Gingland, Asst. Ch., B-57 WSPO, to Cmdr., AFSWC, Attn.: SWOPT, Col, T. T. Omohundro, 9 June 1955, subj.: RB~57D Aircraft Cloud Sampling Capabilities, see App. 30. Ltr., Dr. Plank to Cmdr., AFSWO, Attn,: Col, Omchundro, 21 June 1955, subj.: B-57D Aircraft, see App. 31. Prog. Plan 4-55, "Equipping RB-57D Aircraft for Sampling," prep. by Col, Charles B, Stewart, Dep. Cmdr., AFSWC, 18 July 1955, see App. 32. Ltr., Col. Mahon to LASL, Attn.: Dr. Plank, 2 Nov, 1955, subj.: 33. Ltr., Harry H. Allen, Dept. Head, LASL, to Dir's Off., Dept. of Sup. 3h. Proposal for Air Sampling Version of RB-57D(C).. and Property, 18Nov. 1955, subj.: RB-57D Sampling Version, see App. Ltr., Dr. Plank to Dr. Graves, 12 Dec. 1955, subj.: Very High Altitude Sampler, see App. 35. Ltr., Dr. Plank to Dr, Graves, 12 Dec. 1955, subj.: Very High Altitude Sampler, see App. , 36. Memo. for Maj. Gen, Canterbury, prep. by H. H. Elmendorf, Proj. Off., Ops. Plans Br., AFSWC, 13 Jan. 1956, subj.: AFSWC Sampling Capability, see App. 37 Ltr., Dr. Norris E. Bradbury, Dir., LASL, to Brig. Gen, Canterbury, 23 Dec, 1955, NeSey SEE App. 38. Ltr., Brig. Gen, Canterbury to Dr, Bradtury, 23 Feb. 1956, n.s., see App. 396 Ltr., Col, John S. Samuel, Cmdr., TG 7. (P), to Cmdr., AFSWC, Attn.: pcS/0,-Gal. Mahon, 20 Apr. 1956, subj.: Requirement for Sampler Aircraft, see App. ho. Ltr., Dr. Graves to Brig. Gen, Canterbury, 2 July 1956, n.s., see App. hi, 3rd Ind, (Ztr., SWOTR, AFSWC, to Cmdr., ARDC, 27 Apr. 1956, subj.: (C) Schedule Justification for B-57D Sampler), Lt, Col. Thomas R, Waddleton, Asst. Ch., Test Ops, Div., ARDC, to Dep, CofS, Dev., USAF, 1) Aug. 1956, see App. 259 AFWU WG SWEH -2-003) Oy 48 Lede