De forma urbis Romae deque orbis antiqui facie - Elter, Anton, 1858-1925 (Ex C. Georgi Typographeo Academico, 1891)
Part I issued as a paper from the Universitas Fridericia Guilelmia Rhenana. January 27, 1891. Part II issued as "Index Scholarum" April 16, 1891 from the same University.