Correspondence re. Clean air, and Clean Air Act. Conference on Domestic Smoke Control. National Society for Clean Air. Department of Health for Scotland circulars re Clean Air Act. Public health survey Canal Street/ Canal Lane area. Smoke density meters correspondence. Scottish Development Department circulars re Clean Air Act. Miscellaneous correspondence re smoke abatement, housing stats. (slum clearance). Memorandum on procedure for dealing with Clearance areas.