Cambrian stratigraphy and paleontology near Caborca, northwestern Sonora, Mexico.
1952. Smiths. Misc. Coll. Vol. 119, Nr. 1; 184 pp. 9 fig. 31 plts. with phot. of views (5) and fossils, incl. brachiopods (3) and trilobites (18 plts.) Orig. wrps. with very faint stamp, very good, contents uncut.
Geology of the Tanamá and Helecho porhyry copper deposits and vicinity, Puerto Rico.
1985. US Geological Survey Professional Paper 1327; 59 pp. 36 fig./phot. 1 fold. plt. with col. map in pocket Orig. wrps. with libr. ticket in corner of front cover, very good, 4to.
Mapa geologica de reconocimiento y secciones estructurales de la region de San Blas y El Fuerte, Estados de Sinaloa y Sonora.
1961. Inst. Geol. Univ. Nac. Auton. de Mexico, Cartas Geol. Y Mineras No. 4. Fold. & col. geol. map, with explanatory text on the back. In orig. folder with small libr. stamp, 4to.
Estudio geologico de la region de Guanacaste, Costa Rica.
1962, Inst. Geogr. Costa Rica, San Jose. 112 pp. 7 fig. plts. w. 10 phot. 1 fold. & col. geol. map 1:300,000 in pocket. Orig. wrps. libr. stamp on front cover.
1991. Rev. Geol. America Central No. 12; pp. 1-59, 30 fig. 4 fold. & col. geol. maps 1:50.000 in pocket. Comes with 3 related papers (pp. 61-95) on geological structure, petrography and neotectonics of the area. In complete journal issue, orig. wrps. very good.