Relatives and friends of immigrant Isaac Schweitzer and his wife Isabella Guggenheimer.

This collection of letters centers on Isaac Schweitzer, a merchant from the community of Mühringen who immigrated to the United States in the 1860s. He remained in the United States for almost twenty...

Items relating to the Guggenheimer-Schweitzer collection, largely collected by Peter Schweitzer.

This collection consists of letters sent by three siblings, Charlotte, Sophie, and Theodor Engelmann, to their sister Margarethe. The three Engelmann siblings emigrated to Illinois with their parents,...