3. Louvain, Museum Lessianum, 1928, in-8°, 480 pp, sewn, orig.wrapper, 1 b.w. plate, 1 folding map, bibliography in the notes, text in French, back damaged, binding a bit worn and loose, series Museum Lessianum - Section Missiologique N° 9, (on Roman Catholic missionary travels to the Indians in the Western US.