A Christmas Ghost (sources)

Without Ghost: Earliest: 11-18-2009

• "Baker Christmas Tree, 1919," page in the Library of Congress website, viewed 2-20-2016. Online at: http://www.loc.gov/pictures/item/npc2008009032/
• "Christmas Story: 1919," page in the Shorpy website, posted 11-18-2009, viewed 2-18-2016. Online at: http://www.shorpy.com/node/7159

With Ghost: Earliest 4-23-2010

• "Retro Creeps:Scary Portraits from the Past," page in the Ghost Theory website, posted 4-23-2010, viewed 2-18-2016. Online at: http://www.ghosttheory.com/2010/04/23/retro-creeps-scary-portraits-from-the-past

General Sources

• "A Brief History of Photography," page in the the Authentic History Center website, viewed 2-20-2016. Online at: http://www.authentichistory.com/1865-1897/5-technology/1-photography/
• "Newton D. Baker," page in the Wikipedia website, viewed 2-20-2016. Online at: https://en.wikipedia.org/wiki/Newton_D._Baker
• "Secty. Baker & Jack [1]," page in the Library of Congress website, viewed 2-20-2016. Online at: http://www.loc.gov/pictures/item/npc2007000923/
• "Secty. Baker & Jack [2]," page in the Library of Congress website, viewed 2-20-2016. Online at: http://www.loc.gov/pictures/item/npc2007000920/