Two of my colleagues did a terrific guide for "Migrations and the Americas, Conquest to Present." If that's your topic, I highly recommend looking at that guide as well.
This guide is designed to accompany the four-class Migration Cluster. As such, it has resources for students doing different types of research and using different types of materials.
Archival Collections = places to go in the Library or in Chicago to find special collections relating to the topic, including 19th-century immigrants
Emigrant Guides = ways to find guides written for emigrants either in a library or online
Primary Sources = resources for finding supporting primary research materials
Secondary Sources = resources for finding materials about your topic
There is always more than I can put on any guide. Please contact me or set up an appointment if you aren't finding what you need!