They are located in the Classroom see a supervisor on duty for access. See the Red 3 Ring National Archives Inventory Notebook on Cab. The Notebook is listed next. Indexes and records are on microfilm in the Film Room. See the National Archives Microfilm Inventory Notebook mentioned above.
Many passenger lists are here.
Indexes for Boston 1848-1920. Indexes for Philadelphia 1800-1948. See the National Archives Microfilm Inventory Notebook described above. See the passenger lists books and passenger lists in the 3 ring notebooks in the Passenger Book Area. Important because their genealogical materials and directories are available through public libraries on interlibrary loan.