Harold Sterling Gladwin was an early twentieth century archaeologist that specialized in Southwestern archaeology of the United States.
However, in 1922 he decided to move west to California, and there he began work at the Santa Barbara Museum of Natural History, taking a special interest in the mutations of butterflies.
[2] Taking special interest in pottery sherds and other refuse, Gladwin began to piece together theories on Hohokam culture as he excavated Casa Grande in 1927 in Arizona.
As work in the area grew, the Gladwins began to move around the Southwest in search of clues about the origins of the prehistoric inhabitants.
From the Gila Pueblo, the Gladwins conducted research on Southwestern prehistory for over twenty years before donating the facility to the University of Arizona in 1951.
In the first publication, Gladwin and his team took a special interest in the various types of pottery, figurines, stone tools, and shells, and the reference to each time period that they could identify.
In this novel-like publication, Gladwin describes his view on anthropology, and proposes a theory on the origins of peoples in the Americas, as a result of “multitudinous migrations.”