Specification of John Sylvester
Subtitle: constructing doors and frames for closing the openings of fire-places, &c
Publisher: Great Seal Patent Office; George E. Eyre and William Spottiswoode)
Published: 1857
Place of publication: London
Language: eng
Subjects: Fireplaces; Chimneys; Flues
Notes: At head of title: A.D. 1840. No. 8406.

"John Sylvester, of Great Russell Street, Bloomsbury, in the county of Middlesex, engineer".