Doctor of Philosophy / Department of History / Bonnie Lynn-Sherow / American Indian material culture collections are protected in tribal archives and transnational museums. This dissertation argues that the Plains Indian people and Euroamerican people cross pollinated each other’s material culture. Over the last two hundred years’ interpretations of transnational material culture acculturation of the 19th - Century North American Plains Indians has been interpreted in venues that include arts and crafts, photography, museums, world exhibitions, tourism destinations, entertainments and literature. In this work, exhibit catalogs have been utilized as archives. Many historians recognize that American Indians are vital participants and contributors to United States history. This work includes discussions about North American Indigenous people and others who were creators of material culture and art, the people who collected this material culture and their motives, and the various types of collections that blossomed from material culture and oral history proffering. Creators included Plains Indian women who tanned bison hides and their involvement in crafting the most beautiful art works through their skill in quillwork and beadwork. Plains Indian men were also creators. They recorded the family’s and tribe’s histories in pictograph paintings. Plains Indian storytellers created material that was saved and collected through oral tradition. Euroamerican artists created biographical images of the Plains Indian people that they interacted with. Collections of objects, legends, and art resulted from those who collected the creations made by the creators. Thus today there exists fine examples of ethno-heirlooms that pay tribute to the transnational acculturation and survival of the American Indian people of the Great Western Northern American Plains. What is most important is the knowledge, and an appreciation for the idea that a transnational cross-pollination of cultures enriched and became rooted in United States history.