Lord Lucan and the Irish Potato Famine - Fifteen-page transcription from "The Reason Why" published by McGraw-Hill in 1953. - http://www.usp.nus.edu.sg/victorian/history/famine2.html
Famine In Ireland - Text by Sir Charles Gavan Duffy. - http://history-world.org/famine_in_ireland.htm
Irish Potato Famine - An 1849 depiction of Bridget O'Donnell and her two children during the famine, from answers.com. - http://www.answers.com/topic/irish-potato-famine-1845-1849
The History Place - Irish Potato Famine - Six chapters covering all aspects of the 1845 potato crop failure. Includes an overview, a look at the effects, so called 'coffin ships' and subsequent emigration. Provides illustrations. - http://www.historyplace.com/worldhistory/famine/
Ireland: The Great Famine - Extensive information includes a map of Ireland, science of the potato blight and emigration. - http://www.humboldt1.com/~history/lexiso/
The Irish Famine: 1845-9 - Explanation of the blight that destroyed the potatoe crop, leading to a widespread famine. - http://www.victorianweb.org/history/famine.html
Letter to Lord Russell - An etext of an 1847 book concerning the crisis of famine in Ireland. - http://www.quinnipiac.edu/other/abl/etext/irish/russell/russell.html
Click2Disasters - The Great Hunger - Offers detailed history of the Irish Potato Famine, from potato blight to mass exodus, with links to primary sources. - http://www.click2disasters.com/great_hunger/great_hunger_ch1.htm