Many Africanists, anthropologists and linguists greatly benefited from H.E. Lambert's expert knowledge and generous assistance in the field and in their subsequent research. Among those he mentored were A. H. J. Prins, who did ethnographic research on the Taita and, subsequently, the coastal Swahili, and Philip Gulliver who researched the Turkana.
H.E. Lambert's knowledge and assistance greatly benefited many Africanists, anthropologists, and linguists in their field work and subsequent studies. He guided A. H. J. Prins, who conducted ethnographic research on the Taita and coastal Swahili, and Philip Gulliver, who researched the Turkana.