Columbia subject headings:
Harvard subject headings:
German Americans--Middle West--Correspondence.
German Americans--Pennsylvania--Correspondence.
Immigrants' writings, German--Middle West.
Immigrants' writings, German--Pennsylvania.
Immigrants--Middle West--Correspondence.
Immigrants--Pennsylvania--Correspondence.
Princeton subject headings:
German Americans--Middle West--Biography.
German Americans--Middle West--Correspondence.
German Americans--Middle West--History--19th century.
Immigrants' writings, German--Middle West.
Immigrants--Middle West--Biography.
Immigrants--Middle West--Correspondence.
Immigrants--Middle West--History--19th century.
Middle West--Biography.
Middle West--History--19th century.