Petrifactions and their teachings, or, A hand-book to the gallery of organic remains of the British Museum
London :H.G. Bohn,1851.
University of California Libraries (archive.org)
Public domain. The BHL considers that this work is no longer under copyright protection.
Evidence reported by scanner-ian-white for item petrifactionsthe00mantrich on November 29, 2006: no visible notice of copyright; stated date is 1851.