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.1 and contains 10 masterpieces of Jomon potteries excavated in Tounai ruins and registered as National Important Cultural Properties. The commentaries on each potteries and excavation sites were written and compiled based on the report "Tounai, the center of prehistoric philosophy" that was published in 2011. 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:Jomon Ruins in Idojiri and the Excavations.Discovery and Excavations of Tounai Ruins.Catalog: Cylindrical vessel with a statue of God Bowl with frog patternBig bowl with eyes on four sidesCylindrical vessel with compartment patternCylindrical vessel with cross pattern Deep bowl with a statue of one-eyed GodCylindrical deep bowl with oval compartment pattern Deep bowl with non-decorative edge Deep bowl with two eyes and snake pattern Deep bowl with deformed Mizuchi (legend mythical snake-like beast) pattern