Volumes one and two are drawings by various artists of sculptures by Thorvaldsen, probably made for J M Thiele's biography. Some of the drawings are signed but many are not, and may have been made by students. Many also appear to have been copied from other drawings rather than the original sculptures. Not all of the drawings in these volumes were published; of these unpublished originals the most notable are probably two drawings of Thorvaldsen's houses in Rome.
Volume three is a volume of notes in English by Sarah Rowan, who produced the first English biography of Thorvaldsen following Thiele's work.