Morley, Sylvanus Griswold, 1883-1948 (Personal Name)
- Morley, Silvanus G. (Sylvanus Griswold), 1883-1948
- Morley, S. G. (Sylvanus Griswold), 1883-1948
His The ancient Maya, 1983: t.p. (Sylvanus G. Morley)
Pavón Abreu, R. Cronología maya, 1985: t.p. (Silvanus G. Morley)
LCCN 14007249: Carnegie institution of Washington. Reports upon the present condition and future needs of the science of anthropology, 1913 (usage: S.G. Morley)
Wikipedia, 12 September 2017 (Sylvanus Morley; Sylvanus Griswold Morley; born June 7, 1883 in Chester, Pennsylvania; died September 2, 1948 in Santa Fe, New Mexico; American archaeologist, epigrapher and Mayanist scholar who made significant contributions toward the study of the pre-Columbian Maya civilization in the early 20th century)