Michael Faraday
Technical Advisor to Trinity House in England
Thomas G Evans
Made Macbeth-Evans Fresnel lenses in America and lamp chimneys
John Ericsson
Invented the caloric engine used to power generators and air compressors
Louis J Duboscq
Invented and manufactured arc lamps for lighthouses
Thomas Drummond
Invented the Drummond Lime light that was extensively tested for use in lighthouses
William T Douglass
"Engineer for Commissioners of Irish Lights
William Douglass
Chief Engineer for the Commissioners of Irish Lights
Sir James N Douglass
Chief Engineer for Trinity House in England
Robert E Deitz
Manufactured hand lanterns used in the Lighthouse Service in America
James De Ville
Manufactured lighthouse lanterns and lamps major supplier to Trinity House in England