This, the third article of the series, describes sites visited, or on which test excavations were made, during the fall of 1949 and spring of 1950. No extensive excavations were undertaken due to the press of other duties. The sites at Satohama and Daigi (Miyagi Prefecture) have been partially excavated by Japanese archaeologists, but no English language data are available. The remainder of the sites reported herein have not previously been reported.