“This free site offers access to an extraordinary database of information on 11 million immigrants from 1820 through 1892, the year Ellis Island opened. More than 100 million Americans can trace their ancestors to this early immigration period.”

A privately maintained site. “This is an online collection of databases comprised of the Morton Allan Directory, M1066 Microfilm series from NARA, various newspaper articles, Internet sources, and personal contributions.”

This site provides a passenger search feature “for passengers arriving through Ellis Island from 1892-1924”, which may be helpful to some researchers.

This site has a list of other resource sites.

Information found at the U.S. National Archives and Records Administration.

"The Immigrant Ships Transcribers Guild is a group of volunteers focused on transcribing passenger arrival records and publishing their work online so that immigrant arrivals can be more easily found online. Access to this site is free and all researchers are welcome to share transcriptions they may have already completed. The site currently has free access to more than 7,000 individual passenger manifests and this number continues to grow."

A privately maintained site. “This site contains tens of thousands of pages of material, much of it primary sources, some of it genealogical, and some of it well illustrated and meant for students and parents.”

Information found at Cyndi’s List.

“In many ways, Pier 21 is Canada's equivalent to Ellis Island. From 1928 to 1971, this port received over one million immigrants, wartime evacuees, refugees, troops, war brides and their children. In 1999, Pier 21 reopened after a renovation of the historic building and now pays tribute to those who passed through its doors.”