RUGGLES, S., SCHROEDER, M., RIVERS, N., ALEXANDER, J. T., & GARDNER, T. K. (2011). Frozen Film and FOSDIC Forms: Restoring the 1960 U.S. Census of Population and Housing.

RUGGLES, STEVEN, MATTHEW SCHROEDER, NATASHA RIVERS, J. TRENT ALEXANDER, and TODD K. GARDNER. Frozen Film and FOSDIC Forms: Restoring the 1960 U.S. Census of Population and Housing. 2011.

RUGGLES, STEVEN, et al. Frozen Film and FOSDIC Forms: Restoring the 1960 U.S. Census of Population and Housing. 2011.