Specification of Sir Francis Charles Knowles
Subtitle: manufacture of charcoal
Publisher: Great Seal Patent Office; George E. Eyre and William Spottiswoode)
Published: 1857
Place of publication: London
Language: eng
Subjects: Charcoal; Furnaces; Peat
Notes: At head of title: A.D. 1850. No. 13,331.

"Sir Francis Charles Knowles, of Lovell, in the county of Bucks, baronet".