Ellis Island Passenger Records: https://heritage.statueofliberty.org/passenger
Ellis Island Photographs from the Collection of William Williams, Commissioner of Immigration, 1902-1913 (New York Public Library Digital Collections): https://digitalcollections.nypl.org/collections/william-williams-papers#/?tab=navigation
Ellis Island Photo Galleries from the National Park Service: https://www.nps.gov/elis/learn/photosmultimedia/photogallery.htm
Farmworker Movement Documentation Project at UC San Diego Library: https://libraries.ucsd.edu/farmworkermovement/
Hispanic Digital Collections at the Library of Congress: http://www.loc.gov/rr/hispanic/onlinecol.html
VOCES Oral History Project at UT Austin: http://www.lib.utexas.edu/voces/
Latino Oral History Collection at The Newark Public Library: http://www.npl.org/Pages/Collections/njhric/LatinoOralHistory.html
Bracero History Archive: https://braceroarchive.org/
Documenting the Southeast Asian American Experience: http://seaadoc.lib.uci.edu/
Densho: https://ddr.densho.org/
Japanese American Relocation Digital Archive (JARDA) at the University of California: https://calisphere.org/exhibitions/t11/jarda/
The Japanese American Evacuation and Resettlement Digital Archive: https://bancroft.berkeley.edu/collections/jacs/index.html
Japanese American National Museum: https://www.janm.org/collections
Southeast Asian Digital Archive from UMass Lowell: https://www.uml.edu/research/SEA-digital-archive/
Harvard Library Immigration Collection: https://library.harvard.edu/collections/immigration-united-states-1789-1930
Immigration Documents from DocsTeach and the National Archives: https://www.docsteach.org/documents/search?filter_searchterm=immigration&searchType=all&filterEras=&filterDocTypes=&filter_order=&filter_order_Dir=&rt=eSK3Dgzb9shg
https://education.blogs.archives.gov/2021/02/01/immigration-resources/
Port of Galveston Immigration Database: http://www.galvestonhistory.org/attractions/maritime-heritage/galveston-immigration-database
Immigration History Research Center at the University of Minnesota: http://cla.umn.edu/ihrc
Digital Collections at the Library of Congress: https://www.loc.gov/collections/
Empire Archival Discovery Cooperative: https://www.empireadc.org/
Immigration Challenges for New Americans at the Library of Congress: http://www.loc.gov/teachers/classroommaterials/primarysourcesets/immigration/ (19th and early 20th centuries)
Digital Public Library of America: https://dp.la/
Washington State Jewish Archives at the University of Washington: http://content.lib.washington.edu/jhpweb/index.html
Irish Immigrant Letters Home at the Historical Society of Pennsylvania: https://hsp.org/education/unit-plans/irish-immigration/irish-immigrant-letters-home
The Finnish American Historical Archive at Finlandia University: https://www.finlandia.edu/fahc/archive/ (Finland)
Red Star Line Museum Collection: https://redstarline.be/en/page/collection-online
Immigrant Oral Histories from Minnesota Historical Society : http://collections.mnhs.org/ioh/
Tateuchi East Asia Library Oral History Project at the University of Washington: http://depts.washington.edu/oralhist/wordpress/
South Asian Oral History Project at the University of Washington: http://content.lib.washington.edu/saohcweb/index.html
Vietnamese American Oral History Project by UC Irvine: https://calisphere.org/collections/36/
Census Records at the National Archives: https://www.archives.gov/research/census
Immigration Data Matters Guide by the Population Reference Bureau and the Migration Policy Institute: https://www.migrationpolicy.org/pubs/2008DataGuide.pdf
Migration Policy Institute Immigration DataHub: https://www.migrationpolicy.org/programs/migration-information-source
Immigration Statistics from the U.S. Department of Homeland Security: http://www.dhs.gov/archives
U.S. Citizenship and Immigration Services History Office and Library: https://www.uscis.gov/about-us/our-history/history-office-and-library
Immigration and Migration at Pew Research Center: https://www.pewresearch.org/topic/immigration-migration/
