Franz, J., (1899). Die Figur des Mondes, Astron. Beobachtungen, Königsberg, Bd.38

Reproductions:

Niveaukarte des Mondes nach J. Franz, Breslau.

In: M. W. Meyer: Der Mond, Unsere Nachbarweld. Stuttgart, Kosmos, Gesellschaft der Naturfreunde. p67., 1909

Link: https://publikationsserver.tu-braunschweig.de/receive/dbbs_mods_00028511

“The first contour map of the Moon was constructed by Franz (1899) Just before the turn of the century. He employed only 55 points, a number not too low when sufficiently accurate, or when expectations are not exceeding the possibilities. He worked with linear interpolation between the known points, a rather poor technique for the present and in this particular case.” C.L. Goudas: A contour map of the Moon. Oct 1964. Mathematical Note No, 369 Mathematics Research Laboratory, BOEING SCIENTIFIC RESEARCH LABORATORIES.

Hungarian edition:

In: Scheiner: Népszerű asztrofizika.
K.M. Természettudományi Társulat, Budapest, 1916.
From Magyar Csillagászati Egyesület’s Library, Budapest