In 1917, Martin and Osa departed on a nine-month trip through the
New Hebrides (now
Vanuatu) and the
Solomon Islands. The highlight of the trip was a brief but harrowing encounter with the
Big Nambas tribe of northern
Malekula. Once there, the chief was not going to let them leave. The intervention of a British gunboat helped them escape. Their footage inspired the feature film
Among the Cannibal Isles of the South Seas (1918). The Johnsons returned to Malekula in 1919 to film the Big Nambas once again, this time with an armed escort. The escort proved unnecessary as the Big Nambas were disarmed by watching themselves in
Among the Cannibal Isles of the South Seas. Martin and Osa finished their trip in 1920 with visits to
British North Borneo (now
Sabah) and a sailing expedition up the coast of East Africa. After returning home, they released the features
Jungle Adventures (1921) and
Headhunters of the South Seas (1922). The Johnsons' first African expedition, from 1921 to 1922, resulted in their feature film
Trailing Wild African Animals (1923). During the second and longest trip, from 1924 to 1927, the Johnsons spent much of their time in northern
Kenya by a lake they dubbed Paradise, at
Mount Marsabit. The movies ''Martin's Safari
(1928), Osa's Four Years in Paradise
(1941), and the film Simba: King of the Beasts'' (1928) were made with footage of these trips. In 1925, Osa and Martin met the Duke and Duchess of York, later
King George VI and
Queen Elizabeth, while on safari in Kenya. The third African safari from 1927 to 1928 was a tour of the
Nile with friend and supporter
George Eastman, founder of
Eastman Kodak. Film of this trip, along with previous footage, was made into one of the first talkies for the Johnsons,
Across the World with Mr. and Mrs. Johnson (1930), a cinema serial which included Martin's narrative. In 1928, three Eagle Scouts were selected in national competition to go on safari with the Johnsons in East Africa: Robert Dick Douglas, Jr., of North Carolina, David R. Martin, Jr., of Minnesota, and Douglas L. Oliver of Georgia. The three scouts co-authored the 1928 book
Three Boy Scouts in Africa: on Safari with Martin Johnson. In later life, Douglas (1912-2015) was an attorney, Martin (1913-2004) became an executive in the
Boy Scouts of America, and Oliver (1913-2009) was an Emeritus Professor of Anthropology at both Harvard University and the University of Hawaii. From 1929 to 1931, the Johnsons spent a fourth tour in Africa in the
Belgian Congo. There they filmed the
Mbuti people of the
Ituri Forest and the
gorillas in the Alumbongo Hills. The 1932 feature movie
Congorilla was in part a product of this trip, and was the first movie with sound authentically recorded in Africa. In 1932, the Johnsons learned to fly at the Chanute Municipal Airport (now named the
Chanute Martin Johnson Airport) in Osa's hometown of
Chanute. Once they had their pilot's licenses, they purchased two
Sikorsky amphibious planes, a
S-39-CS Spirit of Africa and
S-38-BS ''Osa's Ark
. On their fifth African trip, from 1933 to 1934, the Johnsons flew the length of Africa, getting now classic aerial scenes of large herds of elephants, giraffes, and other animals moving across the plains of Africa. They were the first pilots to fly over Mount Kilimanjaro and Mount Kenya in Africa and film them from the air. The 1935 feature film Baboona'' was made from this footage. On January 3, 1935,
Baboona was shown on an Eastern Air Lines plane, becoming the first sound movie shown during flight. The movie premiered on January 22, 1935, at the Rialto Theatre in New York City. In 1935, the Johnsons were featured on
Wheaties cereal boxes as "Champions of Sports." Osa Johnson was the second female to appear on the box and she and Martin were the first married couple selected for this honor. The Johnsons' final trip together took them to
British North Borneo again, from 1935 to 1936. They used their smaller amphibious plane, now renamed
The Spirit of Africa and Borneo, and produced footage for the feature
Borneo (1937). Martin Johnson was a member of the
Adventurers' Club of New York. He described the Borneo expedition before the club on November 19, 1936, the event being called "Martin Johnson Night." He previewed his "Borneo Pictures" before the group on December 17, 1936. In January 1937, Martin and Osa began a nationwide lecture and radio tour at the
Mormon Tabernacle in
Salt Lake City. On the morning of January 12, they boarded a flight bound for
Las Vegas and
Burbank.
The plane crashed in bad weather near the Los Pinetos peak in California. Martin died the following day. Osa was severely injured but recovered and gave hundreds of lectures from a wheelchair. By October 1937, the
New York Times was publishing dispatches of Osa's latest trip to Africa, in which she described lifestyles and practices of the
Maasai and other tribes. She died in New York City of a heart attack in 1953. Osa Johnson's autobiography
I Married Adventure was the best-selling non-fiction book of 1940. ==''Osa Johnson's The Big Game Hunt''==