天保十一年夏廻之節村々ヨリ絵図書上申付取之候砌大森村ヨリ之書上絵図及察当置候覚書

This is a collection of documents formerly owned by the Hatamoto Takagi family, who were responsible for flood control in The Kiso Three Rivers basin during the Edo period.（Partially Important Cultural Properties.）