Horse caravans were once the main transport in Yunnan, not only providing a regional transport system, but also carrying culture and power.

林 文勋:

云南古代货币文化发展的特点

History of the use of cowries as currency in Yunnan.

Ma Cunzhao:

茶马古道上远逝的铃声

云南马帮马锅头口述历史

Oral history of the Yunnan Caravan trade.

Sylvie Pasquet:

L'Evolution Du System Postal: La Province Chinoise Du Yunnan A L'\`Epoque Qing (1644-1911)

云南省交通运输厅 (Yunnan Traffic and Transport Office ):

云南古道·古桥·古驿站

An encyclopedia of old road, bridges and carvavan stops in Yunnan.