Rhineland (Rheinland) Emigration and Immigration
A helpful site showing names of emigrants from the area around Trier for the years 1700 – 1900:
www.genealogienetz.de/vereine/wgff/trier/Familienbuecher/Auswanderer.html#Orte
Here is information of craftsmen from Solingen who emigrated to various other countries, taking along their knowledge of sword and knife making.