Folke Bergman(1902-1946) Swedish archaeologist Folke Bergman, discovered 346 pieces of wooden slips at Han fortress P9 at Boro-tsonch (which in Mongolian means "ash mound") in the lower reaches of the Edsen-gol River. More collection items Folke Bergman(1902-1946) Inscribed Arrow Shaft Writing Brush Monthly and Seasonal Records of Military Supplies from the Guangdi South Platoon in the Yongyuan Era Imperial Edict of 61 B.C. Note from P’eng Requesting that Chang Tzu-ch’un Deliver a Letter to Tzu-hou Report on Granting Officer Zheng She Leave of Absence Due to the Death of His Father, 42 B.C. Silk Record Wooden Tag for Bag containing Military Clothing Wooden Talismans