In this paper, I examine the intergenerational occupational mobility of Native Amer- ican men who entered the labor market toward the end of the Assimilation Era (1887- 1934). I use historical census data to construct transition matrices that comparatively represent the occupational mobility dynamics of Native Americans based on a series of historical policy variables. I find that Native American men during this period ex- perienced high levels of downward mobility and correspondingly low levels of upward mobility. I also find that those living in counties with reservations had worse mobility outcomes compared to those not living on reservations, and that individuals who lived in Oklahoma, which had unique political economic dynamics, had the highest relative rates of upward mobility and the lowest relative rates of downward mobility. These findings provide quantitative insight into the often neglected economic lives of Native Americans in the early twentieth century and raise further questions regarding the persistence of mobility and how to alter mobility processes