New Guinea, March 1919 was an unproduced episode of The Young Indiana Jones Chronicles, which would have been part of the third season of the series. The subject of the episode would have been anthropology with the theme being "ritual".
In this episode, Indiana Jones and Remy Baudouin have been discharged from the Belgian Army and go in search of treasure in the South Pacific. They would have had an encounter with pirates and headhunters and wrest a treasure box from them, which they think contains the Monk Diamond. While escaping, they land on an island and are captured by fierce New Guinea headhunting natives. They observe some of the rituals of the natives and then are traded to another native tribe and eventually find themselves with the Trobriand Islanders, a trading people who the famed anthropologist Bronislaw Malinowski is studying and living with. When they finally get the box open, it contains clues to locate the diamond. Remy decides to look for the treasure but Malinowski inspires Indy to return to America and pursue archaeology.
While the episode was not produced, its synopsis was expanded and changed significantly into what became Young Indiana Jones and the Treasure of the Peacock's Eye (shifting much of the action to November 1918), a television movie later edited for home video as part of the The Complete Adventures of Indiana Jones VHS release. The Monk Diamond element was revised as Alexander the Great's diamond, the Peacock's Eye, which was later retconned to be the jewel traded between Indiana Jones and Lao Che during the opening sequence of Indiana Jones and the Temple of Doom.