The Idojiri Archaeological Musuem that is located at the foot of Yatsugatake Mountains in Nagano, Japan is well known for the excellent collections of Jomon Potteries of about 5, 000 years B.P. And till today the research has been continued to ascertain the view of the world of those days based on the study of Jomon Farming and Earthenware Iconography. At the Idojiri Archaeological Museum, we have been creating an image database of those potteries since 1996. And, at this time, we decided to publish a series of catalog for each ruins in the manner of Publishing On Demand toward the world. This catalog is the Vol.3 and contains 12 masterpieces of Jomon potteries excavated in Sorii ruins Dwelling Site #4, #20, #29, #30, #32 and registered as National Important Cultural Properties. The commentaries on each potteries and excavation sites were written and compiled based on the report on " 3rd, 4th and 5th Sori Excavations" by Fujimi-cho (1978) and "Idojiri" by Eiichi Fujimori(1965). As for the photos, we selected at least three photos for each pottery from the multi-view photos that were shot for creating the image database and laid out one photo by one page. The contents are as shown below.Excavation Reports:Sori Ruins and the Excavations.Artifacts uncovered from Sorii ruins Dwelling Site #4, #20, #29, #30, #32.Catalog:12 Jomon potteries