Catalogue of the genera and subgenera of birds contained in the British Museum.
London,Printed by order of the Trustees,1855.
University of California Libraries (archive.org)
Public domain. The BHL considers that this work is no longer under copyright protection.
Evidence reported by ian frederick-rothwell for item catalogueofgener00britrich on February 23, 2007: no visible notice of copyright; stated date is 1855.