Diary of Joseph F.C. Rock Volume 11 [12 on spine]; Li-chiang to K’u-lu and Yung-ning, 1928-1929, entitled ‘Diary of Joseph F. Rock Volume XI, Journey from Nguluko – Likiang to Tatsienlu from November 8th 1928 to February 9th 1929.’
There is a hand drawn map on one of the pages.

Diary of Joseph F.C. Rock Volume 12 [13 on spine]; Yung-ning to Ta-tsien-lu [Kanding], 1929 entitled 'Diary of Joseph F. Rock, Volume XII, from February 13th 1929 to June 3rd 1929.
Contains loose notes and maps.

Diary of Joseph F.C. Rock Volume 13 [14 on spine]; Minya Konka to K’u-lu and Yung-ning, 1929 entitled 'Diary of Joseph F. Rock, from June 5th 1929 to August 31st 1929, Volume XIII [scored out] XIV'.
Some of the pages contain hand drawn maps.

Diary of Joseph F.C. Rock Volume 16; Yunnanfu to Lichiang A-ts’an-gko, 1931 entitled 'Diary of Joseph F. Rock, Vol. XVI, from January 1st 1931 to May 1st 1931'
The diary contains a pressed flower and a loose photograph of Joseph Rock taken by Edgar Snow in 1930.
There are maps drawn on some of the pages.
The diary contains information about Naxi pictograms.

one map used in Forrest's article describing the geography and people of the Upper Salween during his visit there with Consul George Litton in late 1905. The article was published by the Royal Geographical Society in 1908 with this accompanying map, and again by the National Geographical Society in 1910.