The collection is comprised of artefacts, plans and drawings of the Clashawaun Works (jute spinning mill) and its machinery. The business records include; material relating to the formation of the limited company in 1888; correspondence with directors and partners; notices of meetings and resolutions adopted; some handwritten minutes and material relating to the formation of the limited company to a public company in 1937.

Letter from Mark of Saint Bridgid's Church, Clara, County Offaly, to Doctor Francis William Lamb, regarding his valuation of the Old Rectory £100, and confirming his interest in the property for the price of £1250.

Letter from Brother Angelo Holmes at the Franciscan Monastary, Clara, County Offaly, to Canon Adam Lamb.