Primary Source Archives
Library of Congress Immigration & Relocation in U.S. History
Harvard University: “Voluntary Immigration to the United States, 1789-1930”
Image Sources
Archive of Early American Images, John Carter Brown Library
New York Public Library Open Images Digital Gallery
World Digital Library
Granger Historical Picture Archive (create a free account to download)
World Images Database
Library of Congress
Smithsonian Gallery of Images
Heilbrunn Timeline of Art History
American Museum of Natural History, South American Ethnographic Collection
American Museum of Natural History, Mexico & Central American Collection