Early in September 2015, I was discussing my research with a Ph.D. candidate that I had met for the first time at the University of Texas, Austin. I told him that I had conducted preliminary research at the British National Archives and Cadbury Research Library in Birmingham, England during the previous summer. These archives had colonial and missionary documents, respectively, and I expressed a desire to explore documents on healthcare in Nigeria by groups other than the government or the church. My colleague told me about the Rockefeller Archive Center's (RAC) collection and encouraged me to contact an archivist about documents on Nigeria. Of course, I was skeptical. "What can an archive in New York have on early Nigerian history?", I mused. Seeing my reluctance, he reiterated that there was no limit to the collection's reach and gave me a link to the website. I contacted an archivist who encouraged me to search the Center's database. I was surprised and delighted to find tons of files on medicine and reproductive health in Nigeria.