Batakspiegel.

Tweede, vermeerderde druk door M. Joustra. Leiden, S.C. van Doesburgh. 1926, XVI,382 p., large folding map loose in back flap as published, small sketch map and folding genealogical overview, original cover (published by the Bataksch Instituut No 21), ex-library copy.

With: Minangkabau. Overzicht van land, geschiedenis en volkdoor M. Joustra. Second revised print with a map and 16 illustrations. Den Haag, M. Nijhoff, 1923, XI,(1),217 p., folding map, 16 illustrations on plates, original cover (ex-library copy). And with 9 others.