Library of Congress call numbers group books by subject. The following call number ranges contain materials relating to German history, language and culture.
Searched Miami's catalog and OhioLink and still can't find the book you want?
Request it through interlibrary loan.
Interlibrary loan will find a library that owns the book, and will request it on your behalf.
To request a book through interlibrary loan, fill out the online form: https://ill.lib.miamioh.edu/illiad/