Humphrey Southall; Paula Aucott; Chris Fleet; Tom Pert; Michael Stoner (2 January 2017). "GB1900: Engaging the Public in Very Large Scale Gazetteer Construction from the Ordnance Survey "County Series" 1:10,560 Mapping of Great Britain". Journal of Map and Geography Libraries: advances in geospatial information, collections, and archives. 13 (1): 7–28. doi:10.1080/15420353.2017.1307305. ISSN1542-0353. WikidataQ58523394.
Paula Aucott; Humphrey Southall; Carol Ekinsmyth (11 February 2019). "Citizen science through old maps: Volunteer motivations in the GB1900 gazetteer-building project". Historical Methods. 52 (3): 150–163. doi:10.1080/01615440.2018.1559779. ISSN0161-5440. WikidataQ81201270.
Humphrey Southall; Paula Aucott; Chris Fleet; Tom Pert; Michael Stoner (2 January 2017). "GB1900: Engaging the Public in Very Large Scale Gazetteer Construction from the Ordnance Survey "County Series" 1:10,560 Mapping of Great Britain". Journal of Map and Geography Libraries: advances in geospatial information, collections, and archives. 13 (1): 7–28. doi:10.1080/15420353.2017.1307305. ISSN1542-0353. WikidataQ58523394.
Paula Aucott; Humphrey Southall; Carol Ekinsmyth (11 February 2019). "Citizen science through old maps: Volunteer motivations in the GB1900 gazetteer-building project". Historical Methods. 52 (3): 150–163. doi:10.1080/01615440.2018.1559779. ISSN0161-5440. WikidataQ81201270.
Humphrey Southall; Paula Aucott; Chris Fleet; Tom Pert; Michael Stoner (2 January 2017). "GB1900: Engaging the Public in Very Large Scale Gazetteer Construction from the Ordnance Survey "County Series" 1:10,560 Mapping of Great Britain". Journal of Map and Geography Libraries: advances in geospatial information, collections, and archives. 13 (1): 7–28. doi:10.1080/15420353.2017.1307305. ISSN1542-0353. WikidataQ58523394.
Paula Aucott; Humphrey Southall; Carol Ekinsmyth (11 February 2019). "Citizen science through old maps: Volunteer motivations in the GB1900 gazetteer-building project". Historical Methods. 52 (3): 150–163. doi:10.1080/01615440.2018.1559779. ISSN0161-5440. WikidataQ81201270.