Watercolour sketch map of Sikkim by JDH, showing his route through the country to the Tibetan passes. The following are marked on the map and key: Thibet, Lachen Pass over Kongra Lama, Lachen Pass over Donkiah Mt Chomiomo, Cholamo lakes Mt Donkia 23175 ft. Mt Kanchan--Zhow, Tungu, Samdong, Lachong?, Tunkra Mt, Choongtam, Black Rock, Kankola Pass, Choombi river, Chola, Boundary of Sikkim, bridge on Lachoong where Kinchin [JDH's dog] was drowned Aug 15.

Hand drawn map of Sikkim by Joseph Hooker, with the following marked: Thibet, Cholamo Plains, Lachen Pass over Kongra--Lama, Lachoong Pass over Donkiah, High Table Land of Thibet, Chomiomo, Kanchin--jhow, Lakes, Chumalari, Tungu, Lachen, Samdong, Lachoong, Kinchin--junga [Kanchenjunga], Tunkra Mts, Lachen village, Lachong, Jongri, Pundeem, Choongtam, Nursing, Black Rock, Kankola Pass, Kunglo, Ratong, Tumlong Chola Residence of Rajah, Choombi River, Pemiongchi, Manom, Tendong, Tonglo, Darjeeling.

JDH's rough sketch map of 2 Routes from Darjeeling to Tibetan Passes. Hand drawn map with the following marked on it: Walanchoong Pass, Kanglachema Pass, Darj[eeling]., Lachen Pass, Chumabii, High Table Land. Of Thibet [Tibet], Powhunni, Wallanchoong, Yangma, Lachen Pass, Lachoong Pass, Tambur, Yangma, Pass, Nango Mt., Jumnoo, Kamblachen, Kubroo,Kinchin--junga [Kanchenjunga], Lachen, Lelyp, Talloong, Choonjerma Pass, Yalloong, Jongri, Pundeem, Choongtam, Mywa Guola, Chorang, Rotong, Nursingh, Lachong, Tambur, Khabili, Singalelek, Rungbo, Pemiongchi, Kullait, Manom, Singtam Tumlong, Thibet., Hinwa, Jwa, Ruttoo, Gt Rungeet, Teesta, Sankyazung, Phulloott, Rumman, Tundong, Nangki, Tonglo, Little Rungeet, Route 1849, Poona, Mai, Goong, Darjeeling Teesta, Tumlong Residence of Rajah.