Abstract
We considered the pictures of Hagi castle town and materials of Mohri family library, so the following points were obtained: 1. Besides the past results, we presumed some new conclusion about presumptive date about the pictures of Hagi castle town. 2. Hagi Clan used pictures to grasp residences and possessions of the vassals. 3. In the middle and late of 18c, Hagi Clan didn't prasp residences and possessions of the vassals well, because of usage conditions of the pictures.