You can find out when most of the Mersch families immigrated to the United States. You can focus your search to immigration records dating from that era. Immigration records can tell you an ancestor's name, ship name, port of departure, port of arrival and destination.
What is a System Requirements Specification (SRS)? A System Requirements Specification (SRS) (also known as a Software Requirements Specification) is a document or set of documentation that describes the features and behavior of a system or software application.
Material Requirements Planning (MRP I) Following the strict APICS definition, MRP (more accurately MRP I, read MRP-one) is a system that helps a manufacturer plan their purchasing and production activities, and when necessary, create the required purchase orders and production orders in time to meet customer commitments.