“西夏乾祜二年(1171)黑水城般驮、脚户运输文契”——汉文文书与西夏交通运输
“서하건호이년(1171)흑수성반타、각호운수문계”——한문문서여서하교통운수
"Contract on Transportation in the Khara-Khoto City by Pack Animals or Hired Labor in the Second Year of the Qianyou Era in Western Xia (1171)" Also on Chinese Documents & Western Xia Transportation