References for the summary and highlights of the following articles were taken from:

The book of George M. Dyott "Man Hunting In The Jungle" Being a Story of a Search for Three Explorers Lost in the Brazilian Wilds

In 1928, a year after the report of Courteville, N.A.N.A. organized a big expedition led by Commander George Dyott to investigate Fawcett’s fate (Brian and Dyott were met in Peru earlier in 1924).

The four men chosen to accompany Dyott were all young fellows without any previous experience in the field of exploration. 

Bill De Mello, with Gerald Martin to help him, was the wireless expert. 

J. J. Whitehead and Samuel K. Martin were Dyott's assistants covering the photographic work as well. 

The expedition which goal was not to explore Brazilian territories but to hunt for Colonel Fawcett wherever he might be, set sail on February 18, 1928 for South America on board 'S.S. Voltaire' of the "Lamport & Holt Line".

Dyott left Cuyaba in May 1928 . They made across country to the Kuliseu River, coming to a village of the Nafaqua Indians. In the hut of the chief Aloique, Commander Dyott saw a metal uniform case, and the chief’s son wore around his neck a string with a brass tag bearing the name of the maker of this trunk, Silver & Co. of London.

Aloique said the trunk was given tom him by a Caraiba (white man) who had come with two others, younger, and both lame. The three had been taken by Aloique to a Kalapalo Indian village on the Kuluene River, after which they crossed the river and continued east. For five days the smoke of their campfires was seen, and then no more.

The Dyott expedition returned with no proof of anything – not even that the Fawcett party had been there, for while the uniform case, identified by the maker, had belonged to Fawcett, it was discarded by him in 1920. It was Commander’s Dyott belief that Fawcett had been killed.