ArmeniaBOOK: Armenian Immigrants by Linda L. Avakian; Picton Press, 1996, 288 pages
Lists approximately 7300 Armenian passengers who arrived in New York from 1880 to 1897 and Boston from 1891 to 1901. This book can be found at some genealogy libraries.
Czech Republic - includes Bohemia, Moravia & SilesiaBOOK SERIES: Czech Immigration Passenger Lists by Leo Baca; Old Homestead Pub. Co., 1983 (Halletsville, TX), 9 Volumes
Note: If you have Czech ancestors they may be listed on the passenger arrival records as being from Bohemia, Moravia or Silesia.
GreeceBOOK: Greek Immigrant Passengers 1885-1910 by Mary Voultsos; Privately published by Mary Voultsos, 1991, 4 volumes.
These four volumes document the arrivals of approximately 15,000 Greek passengers at the ports of New York and Boston from 1885-1910. You can find these books in some genealogy libraries or try inter-library loan.
Luxembourg [Luxemburg]BOOK: Luxembourgers in the New World: A Reedition Based on the Work of Nicholas Gonner, "Die Luxemburger in der Neuen Welt," Dubuque, Iowa, 1889; 2 Volumes; Jean Ensch, Jean-Claude Muller, Robert E. Owen (editors); original translations by Gerald L. Liebenau and Jean-Claude Muller. Publisher: Esch-sur-Alzette, Grand Duchy of Luxembourg: Editions-Reliures Schortgen, 1987. Volume one contains a chapter that lists selected Luxembourger immigrants who arrived in New York 1844-1897. You will sometimes find Luxembourgers listed on passenger lists as German, Prussian, Dutch, Belgian or French.
SwedenBOOK: Swedish Passenger Arrivals in the United States 1820-1850 by Nils William Olsson and Erik Wikén, published by Schmidts Boktryckeri AB, 1995; indexed. This well researched book documents about 5000 Swedish immigrants who came to the US from 1820-1850. Information given for each person includes age, sex, name of ship, date of arrival, and ports of arrival & departure. A brief bio is also given for many of the passengers or families. You might try your local library.
ONLINE INDEX: Swedish Emigration Records, 1783-1951 (at Ancestry/requires payment) has over 1.5 million entries; gives place of origin (town) and destination (often US city) for many of the emigrants
DIGITIZED MICROFILM: Index to Emigrants from Sweden to New York, 1851-1869 available from FamilySearch; you have to be at a Family History Center, a FamilySearch affiliated library, or the Family History Library in Salt Lake City to view the digitized microfilm.