Who is LeEtta Osborne-Sampson from the nonfiction book, Wandering in Strange Lands?

LeEtta Osborne-Sampson is a historian and researcher focusing on Black history in Seminole County, Oklahoma. Historically, Seminole Natives used to be very hospitable to Black Americans, but the Seminole then became highly oppressive and discriminatory towards Black Americans. Osborne-Sampson showed Jerkins various sites and monuments related to Black oppression in Seminole County, Oklahoma.