[1][2] His scientific contributions included archaeological surveys, excavations, and the documentation of previous collections, as well as detailed analyses of ethnohistoric and linguistic evidence bearing of the region's prehistory.
He directed small anthropological field schools in Baja California Sur for the University of Washington and the Escuela Nacional de Antropología e Historia in 1953-1954.
[5] His Ph.D. dissertation remained unpublished but presented the results of archaeological surveys and excavations in Baja California Sur's Cape Region with unprecedented detail and interpretive rigor.
[6] Two versions of an article addressed the issue of the continued use of the spear-thrower and dart into the early historic period in some areas of Baja California Sur.
[7][8] He reported and analyzed previous archaeological collections by the 20th-century Jesuit César Castaldí in the southern half of the peninsula[9] and by the 19th-century naturalist Edward Palmer at Bahía de los Ángeles in the north.