As a small response to Greg Dahl's question, I don't know about internships, but there is an interesting display concerned with immigration/emigration/forced emigration at the Maritime Museum at Albert Docks in Liverpool (UK) which attempts to capture the experience of slaves being sent via Liverpool to the USA. It forces people to face up to significant issues connected to slavery. The web address is: http://www.connect.org.uk/merseyworld/AandE/museums/maritime.html I'm sure that other UK museums could help with issues connected with the movement of the Scots and Irish to N America in the 19th C. A useful starting point could be a major university (eg Glasgow) and its history department, where there is certain to be an expert on the highland clearances and associated emigrations.