The collection is composed of both printed and manuscript items, these being:
- - Manuscript letters 1835-1854, probably copies and transcribed during Lewis's research, and between Nassau William Senior (1790-1864) and Richard Whately the Archbishop of Dublin (1787-1863)
- - Manuscript, Minutes of Evidence,To the Chairman of the Committee appointed by the House of Commons to enquire into the present state of the Police of the Metropolis, Lyons Inn, 1 July 1828
- - Manuscript, beginningNotes of objections to the proposed measure of recommending to parishes, having unemployed able-bodied paupers, to hire their labour to farmers to dig or fork the farmers land at ploughing prices
- -Report on dwellings characterised by cheapness combined with the conditions necessary for health and comfort, by Edwin Chadwick. pp.79 (some damaged and missing)
- -Sanitary principles of school construction, by Edwin Chadwick (1871)
- -Report on the application of science and art. Street-paving and street-cleansing of the metropolis. pp.33
- -Water supply of the metropolis, by Edwin Chadwick. pp.8