Where to start?

Can someone comment on where to start to find my GGF in Germany?
We have just located our ancestor, Juergen MEYER, on the S S Carl passenger list arriving in New Orleans 22 Oct 1866. All oral and records to date say he was from Prussia, Germany or Hannover. His birth date is 15 Sep 1838. Where - What do I look?
Thanks, Ken

Ken, I saw your listing in the Hannover list and wanted to write to you. I have a Meyer that came from Braunschweig and came to New Orleans in abt. 1847. My Meyer line eventually lived in SE MO. Where do you Meyers end up? Judy

From hannover-l-admin Mon Oct 2 07:36:06 2000
Received: from mx.buergernetz-erft.de (mx.buergernetz-erft.de [212.72.79.197])
  by list.buergernetz-erft.de (8.9.3/8.9.3) with ESMTP id HAA01263
  for <hannover-l@list.buergernetz-erft.de>; Mon, 2 Oct 2000 07:36:05 +0200 (CEST)
  (envelope-from hannover-l-admin@retsys.eics.com)
Received: from ns.eics.com (ns.eics.com [212.72.79.193])
  by mx.buergernetz-erft.de (8.9.3/8.9.3) with ESMTP id HAA58151
  for <hannover-l@list.buergernetz-erft.de>; Mon, 2 Oct 2000 07:17:44 +0200 (CEST)
  (envelope-from hannover-l-admin@retsys.eics.com)
Received: from retsys.eics.com (retsys.eics.com [212.72.79.194])
  by ns.eics.com (8.9.3/8.9.3) with ESMTP id HAA81293
  for <hannover-l@list.buergernetz-erft.de>; Mon, 2 Oct 2000 07:40:28 +0200 (CEST)
  (envelope-from hannover-l-admin@retsys.eics.com)
Received: from mx.buergernetz-erft.de (mx.buergernetz-erft.de [212.72.79.197]) by retsys.eics.com (8.8.5/8.8.3) with ESMTP id HAA22575 for <Hannover-l@genealogy.net>; Mon, 2 Oct 2000 07:22:58 +0200 (CEST)
Received: from smtp05.primenet.com (smtp05.primenet.com [206.165.6.135])
  by mx.buergernetz-erft.de (8.9.3/8.9.3) with ESMTP id HAA58147
  for <Hannover-l@genealogy.net>; Mon, 2 Oct 2000 07:17:41 +0200 (CEST)
  (envelope-from gkilgore@primenet.com)
Received: (from daemon@localhost)
  by smtp05.primenet.com (8.9.3/8.9.3) id WAA26641
  for <Hannover-l@genealogy.net>; Sun, 1 Oct 2000 22:23:09 -0700 (MST)
Received: from 206-165-25-112.nas-2.cgz.gblx.net(206.165.25.112), claiming to be "primenet"
via SMTP by smtp05.primenet.com, id smtpdAAAivaa_Z; Sun Oct 1 22:23:03 2000
Message-ID: <01ff01c02c31$bccc5020$0c19a5ce@primenet.com>