Hello Jon,
I do not think many of the records you are looking for are free online;
There are some USA passenger *Arrival* lists available on line through Ancestry(Subscription)and other sites for New York arrivals, have you checked these for the arrival of the "Weser" in 1874?
Ellis Island did not open until 1892 and if it was via a New York City port, then you need to check Castle Garden for incoming immigrants.
http://www.castlegarden.org/
Bremen *Departure* lists:
Inquiries and/or questions re the Bremen Passenger Lists will be replied to by members of DIE MAUS at e-mail: kwesling(at)gmx.de.
DIE MAUS webpage: http://www.passengerlists.de/
Etelsen Parish Registers: Research inquiries:
Entdecke durch die Ahnenforschung, was alles von den Ahnen vererbt wird (lists of parish registers)
and years available for each parish.
Etelsen Kirche
Pfarramt und Pfarrb�ro:
Am Denkmal 6,
27299 Etelsen, Telefon: 04235/375, Fax: 04235/942120,
E-Mail: KGETELSEN@gmx.de
Webpage: http://www.kirche-etelsen.de/
Census information:
Only an index to family names is online otherwise you may purchase "Amt Achim" records yourself details below;
http://www.hist.de/new.htm
1852 census, kingdom of Hanover : Amt Achim
http://www.hist.de/edition-hist(e).html
LDS Library catalog has the following "Amt Achim" Census information:
Authors
Koppe, Regina (Main Author)
Transcription of data from the 1852 census of Amt Achim, in the Kingdom of Hanover, later part of Prussia.
Pt. 1. Arbergen, Hemelingen, Mahndorf -- Pt. 2. Bierden, Bollen, Embsen, Uphusen -- Pt. 3. Achim, Uesen -- Pt. 4. Bassen, Bockhorst, Borstel, Meyerdamm, Oyten, Oyterdamm, Sagehorn, Schaphusen -- Pt. 5. Allerdorf, Baden, Giersdorf, Grasdorf, Stellenfelde, W�mmingen -- Pt. 6. Cluvenhagen, Daverden, Etelsen, Hagen.
"Lists of all inhabitants with age, profession, religion, maritial [sic] status and family name index" -- cover.
Subjects
Germany, Hannover (K�nigreich) - Census - 1852
Germany, Preu�en, Hannover - Census - 1852
Germany, Preu�en, Hannover, Achim - Census - 1852
Germany, Preu�en, Hannover, Arbergen - Census - 1852
Germany, Preu�en, Hannover, Hemelingen - Census - 1852
Germany, Preu�en, Hannover, Mahndorf - Census - 1852
Germany, Preu�en, Hannover, �sen - Census - 1852
Germany, Preu�en, Hannover, Bierden - Census - 1852
Germany, Preu�en, Hannover, Bollen - Census - 1852
Germany, Preu�en, Hannover, Uphusen (Kr. Achim) - Census - 1852
Germany, Preu�en, Hannover, Embsen (Kr. Achim) - Census - 1852
Germany, Preu�en, Hannover, Bassen (Kr. Achim) - Census - 1852
Germany, Preu�en, Hannover, Bockhorst (Kr. Achim) - Census - 1852
Germany, Preu�en, Hannover, Borstel (Kr. Achim) - Census - 1852
Germany, Preu�en, Hannover, Meyer-Kl�verdamm - Census - 1852
Germany, Preu�en, Hannover, Oyten (Kr. Achim) - Census - 1852
Germany, Preu�en, Hannover, Oyterdamm - Census - 1852
Germany, Preu�en, Hannover, Sagehorn - Census - 1852
Germany, Preu�en, Hannover, Schaphusen - Census - 1852
Germany, Preu�en, Hannover, Allerdorf - Census - 1852
Germany, Preu�en, Hannover, Baden (Kr. Achim) - Census - 1852
Germany, Preu�en, Hannover, Giersdorf-Schanzendorf - Census - 1852
Germany, Preu�en, Hannover, Hintzendorf-Stellenfelde - Census - 1852
Germany, Preu�en, Hannover, W�mmingen - Census - 1852
Germany, Preu�en, Hannover, Kluvenhagen - Census - 1852
Germany, Preu�en, Hannover, Daverden - Census - 1852
Germany, Preu�en, Hannover, Etelsen - Census - 1852
Germany, Preu�en, Hannover, Hagen-Grinden - Census - 1852
Copies
Call Number - Location - Status - High Density
943.59 X2ac pt. 1-6 - FHL INTL Book - Available - Book Storage 0265947
Format
Books/Monographs
Language
English
Publication
Bremen [Germany] : Koppe, Regina, 2002-
ISBN/ISSN
3936777144 Amt Achim complete edition
393677708X Amt Achim part 1
3936777098 Amt Achim part 2
3936777101 Amt Achim part 3
3936777047 Amt Achim part 4
3936777128 Amt Achim part 5
3936777136 Amt Achim part 6
Subject Class
943.59 X2
Hope this helps, otherwise just ask "google" your question and scroll through the results.
Elizabeth