Hypsometrical maps [of Sven Hedin's route through Tibet 1906-08] ... with special use of ... Hedin's Panoramas / 
Hedin, Sven Anders.
Byström, A. H.
Gotha :  J. Perthes, 
[1922]
The maps indicate panoramas in both Hedin's Atlas of Tibetan Panoramas and the volumes of "Southern Tibet", Maps 2. [Vol. 11.] of: Southern Tibet. Discoveries in former times compared with my own researches in 1906-1908. By S. Hedin.