North - Smith Mackenzie & Co. - Poss. Goan - Conducted caravans for Smith, Mackenzie & Co.; dep. Ravine for Uganda with steamer parts 15/6/1895, arr Mumia's 26/7/1895; On way down from Uganda Aug 1895; Kikuyu 27/11/1895 involved with coffee plantation. In charge of caravan with steamer parts & two mechanics for Lake Victoria March 1896

Curtis - p. 79 - mention of a Mr Lewis in charge of caravan passing through Eldama Ravine on 13th July 1895

Web - Warriors in Heart of Darkness by Dennis Bishop - 1895 - On July 15, a caravan under G.W. Lewis of Smith, Mackenzie and Company left Ravine with 2 European mechanics, 20 Indian artisans and over 400 porters. The caravan finally reached Mumias on July 26 having lost over 20 loads to a Nandi attack on the Uasin Gishu Plateau.

Nicholls - Smith Mackenzie had a store at Mumias by 1896, and their agent G.W. Lewis formed the Mirimbi Coffee Syndicate in Kikuyuland, under the management of Charles Kitchin.

North - Dep. Kikuyu for site of Kedong Massacre 27-11-1895