''The Late Sir Edward P. Cowan.1842-1890. Lord Lieutenant County Antrim', 1890. Creator: Unknown.
2-913-330 - The Print Collector/Heritage Images
'The Late Sir Edward P. Cowan. Lord Lieutenant County Antrim. 1842-1890', 1890. From "The Graphic. An Illustrated Weekly Newspaper", Volume 41. January to June, 1890.