We all know that healthy partnerships are essential to fruitful boundary-crossing ministries, but how exactly do we create them? What barriers must be overcome, and what self-examination must we do? How do the legacies of colonialism, racism, and unhealed trauma impact missional collaborations today? In this doctoral thesis, Denyer reflects on these questions as she examines the history of relational dynamics between American and Congolese United Methodists in the North Katanga Conference (DR Congo). By surveying memoirs, magazines, and journals, and conducting in-depth interviews, Denyer presents a complex and multifaceted example of a partnership that is in the process of decolonizing. More than just a history lesson, Decolonizing Mission Partnerships presents the questions, hard truths, pitfalls, and toxic assumptions we must face when attempting to be in mission together.