REFERENCES
Patents
GB
14th June 1892 No 11,127
25th April 1894 No 8,193
21st Dec 1895 No 24,496
16th January 1901 No 1,096
Canada
7th march 1895 No 48,364
USA
21st May 1895 No 539,459
France
1894 No 8,193
Prospectus for the Sanitary Supply Corporation Limited 1896
Agreement between the Strand Board of Works, the Hotel Cecil and the Savoy Hotel 3rd July 1897 re the provision of sewer gas destructors in Carting Lane, containing brochure 'Deakin's Patent Sewer gas Destructor' -
Nik Morton 'Webb Patent Sewer gas Lamp' 2007/10 http://www.freewebs.com/nikmorton/webbgaslamps.htm
English Heritage Register of Listed Buildings
Google searches
I would welcome information on any other surviving Webb lamps; working, converted or derelict, in this country or abroad.