A full list of sources can be found here.
These passenger and crew lists were recorded on a variety of forms that were then turned over to the Immigration and Naturalization Service. Details requested on the forms varied, but they typically include the name of the vessel and arrival date, ports of departure and arrival (as well as future destinations on a ship’s itinerary), dates of departure and arrival, shipmaster, full name, age, gender, physical description, military rank (if any), occupation, birthplace, citizen of what country, and residence. For military transports, you may find the next of kin, relationships, and address listed as well. Later manifests may include visa or passport numbers.