- FondsHoyle - Papers of Sir Fred Hoyle
- SeriesBox 39 - Box 39
- File7 - 'Coverways' See also 86/2/1
- Item1 - Photocopy of typescript letter, signed on behalf of James T. Barkelew (Patent Attorney) and Charlton M. Lewis (Patent Agent) to Willy Fowler
- Item2 - Robert S. Blair, 'Art of an apparatus for ventilation'
- Item3 - Wilbur Rounding Franks, 'Method of cleaning air in enclosed spaces'
- Item4 - Harry A. Wintermute, 'Apparatus for collecting suspended particles'
- Item5 - Leonard John Minnick, 'Method for controlling smog'