Columbia subject headings:
Hess, Johann Friedrich Christian, 1785-1845.
Library architecture--Germany--Frankfurt am Main.
Mäckler, Christoph, 1951-
Stadtbibliothek Frankfurt am Main.
Harvard subject headings:
Library buildings--Remodeling for other use--Germany--Frankfurt am Main--Designs and plans.
Stadtbibliothek Frankfurt am Main--Buildings--Conservation and restoration--Designs and plans.
Princeton subject headings: