Specification of Roger Wearn
Subtitle: furnaces of steam boilers
Publisher: Great Seal Patent Office; George E. Eyre and William Spottiswoode)
Published: 1854
Place of publication: London
Language: eng
Subjects: Furnaces; Steam-boilers
Notes: At head of title: A.D. 1790. No. 1758.

"Roger Wearn, of the parish of Phillack, in the county of Cornwall, bricklayer".