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blue plaque · Leeds

Joseph Aspdin

Placeholder for Joseph Aspdin blue plaque

Joseph Aspdin (1778-1855). Portland Cement, one of mankind's most important manufactured materials, was patented by Joseph Aspdin, a Leeds bricklayer, on 21 October 1824. Aspdin lived in this yard (then called Slip Inn Yard) and first sold his cement in Angel Inn Yard

Inscription drawn from imported open data, awaiting original TributeLegacy editorial.

Source: Open Plaques. Geographic data via OpenStreetMap.

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Data sources

Location records are drawn from open, licence-clean datasets, kept here with attribution and gratitude to the people who maintain them.

  • Open Plaques, dedicated to the public domain (CC0). See openplaques.org.
  • Wikidata, available under the CC0 1.0 Universal dedication.
  • © OpenStreetMap contributors, available under the Open Database Licence.
  • Historic England, National Heritage List for England, used under the Open Government Licence v3.0. War memorial records are drawn from open community datasets (OpenStreetMap, Wikidata, NHLE) — never from the Commonwealth War Graves Commission, which is excluded.

Editorial descriptions, photography and tribute links are original TributeLegacy work, layered on top of the open data.

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