The birds of North America
New York :Published under the auspices of the Natural Science Association of America,1903.
biodiversitylibrary.org/page/35159541
Description: English: Barred Owl Baltimore Maryland. Date: 2008. Source: Own work. Author: Pbphotography. Baltimore Maryland Licensing[edit] Public domainPublic domainfalsefalse. : I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. Public domainPublic domainfalsefalse.