"Web-based collection of selected historical materials from Harvard's libraries, archives, and museums that documents voluntary immigration to the US from the signing of the Constitution to the onset of the Great Depression"
U. of Illinois at Chicago--"900 separate texts, including correspondence, newspaper articles, unpublished memoirs, magazine and journal articles, maps, and hundreds of images of historic significance for documenting the life and times of Jane Addams, the history of the social settlement movement and of Hull-House, and the history of the Near West Side neighborhood and its immigrant communities"
"Mission . . . is to strengthen America by honoring our immigrant history and shaping how Americans think and act towards immigration now and in the future"--See Immigration Policy Center/Research & Publications
"A project of the Center for History and New Media, George Mason University, the Smithsonian National Museum of American History, Brown University, and The Institute of Oral History at the University of Texas at El Paso"
"The Center for Immigration Studies is an independent, non-partisan, non-profit research organization founded in 1985. It is the nation's only think tank devoted exclusively to research and policy analysis of the economic, social, demographic, fiscal, and other impacts of immigration on the United States."
"Follow a diverse group of immigrants and refugees as they leave their home and families behind and learn what it means to be new Americans in the 21st century."
From the Migration Policy Institute, "an independent, nonpartisan, nonprofit think tank in Washington, DC dedicated to analysis of the movement of people worldwide"
Quantitative facts on American history--includes information on population, work and welfare, economic structure and performance, governance, and international relations
Full title: History of immigration to the United States, exhibiting the number, sex, age, occupation, and country of birth, of passengers arriving ... by sea from foreign countries, from September 30, 1819 to December 31, 1855
"Nonprofit organization that seeks to empower migrant and seasonal farmworkers to improve their living and working conditions, immigration status, health, occupational safety, and access to justice"