Detlef Mertins, associate professor of architecture at the University of Toronto, is an architect, historian, and critic. Harry Francis Mallgrave translated Otto Wagner's Modern Architecture for the Texts & Documents series, and his most recent book is Gottfried Semper: Architect of the Nineteenth Century.

Detlef Mertins, associate professor of architecture at the University of Toronto, is an architect, historian, and critic. Harry Francis Mallgrave translated Otto Wagner's Modern Architecture for the Texts & Documents series, and his most recent book is Gottfried Semper: Architect of the Nineteenth Century.

Detlef Mertins, associate professor of architecture at the University of Toronto, is an architect, historian, and critic. Harry Francis Mallgrave translated Otto Wagner's Modern Architecture for the Texts & Documents series, and his most recent book is Gottfried Semper: Architect of the Nineteenth Century.