Immigration to the United States, 1789-1930
The Harvard University Library Open Collections Program has created this digital library of historical documents on immigration.
“Concentrating heavily on the 19th century, Immigration to the United States, 1789-1930, includes approximately 1,800 books and pamphlets as well as 9,000 photographs, 200 maps, and 13,000 pages from manuscript and archival collections. By incorporating diaries, biographies, and other writings capturing diverse experiences, the collected material provides a window into the lives of ordinary immigrants.” (quoted from site’s home page)
Also included in this collection are statistical publications on immigration. To find these, perform a search for the term ‘statistics’ and change the dropdown menu from ‘Anywhere’ to ‘Subject.’ You can add extra search terms to the second search box, but you might want to browse the search results first for context, from which you can select keywords more strategically.