1. The stratigraphy of the Cabos series in the section between Cadavedo and Luarca, Province of Oviedo, N.W. Spain;Baldwin;Brev. Geol. Astur., Año,1975
2. The Sedimentology and Ichnology of the Cambro-Ordovician of Western Brittany, North West Spain and the Welsh Borderlands;Baldwin,1976
3. Rusophycus morgati: an Asaphid produced trace fossil from the Cambro-Ordovician of Brittany and N.W. Spain;Baldwin;J. Paleontol.,1977
4. Organisation, life and systematics of trilobites;Bergström;Fossils Strata,1973
5. Some trilobite resting and crawling traces;Birkenmajer;Lethaia,1971