List of the specimens of birds in the collection of the British Museum /
London :printed by the order of the Trustees,1844-1867.
University of California Libraries (archive.org)
Public domain. The BHL considers that this work is no longer under copyright protection.
Evidence reported by judyjordan for item listofspecimenso14britrich on April 4, 2007: no visible notice of copyright; stated date is 1848.