Benedict; et al. (2002). "A Mass for the Extrasolar Planet Gliese 876b Determined from Hubble Space Telescope Fine Guidance Sensor 3 Astrometry and High-Precision Radial Velocities". The Astrophysical Journal Letters. 581 (2): L115–L118. arXiv:astro-ph/0212101. Bibcode:2002ApJ...581L.115B. doi:10.1086/346073. S2CID18430973.
O'Keefe, John A.; Roman, Nancy G.; Yaplee, Benjamin S.; Eckels, Ann (2013). "Ellipsoid Parameters from Satellite Data". Contemporary Geodesy: Proceedings of a Conference Held at the Harvard College Observatory-Smithsonian Astrophysical Observatory, Cambridge, Massachusetts, December 1-2, 1958. Geophysical Monograph Series. pp. 45–51. doi:10.1029/GM004p0045. ISBN9781118668832. Retrieved May 5, 2020.
Benedict; et al. (2002). "A Mass for the Extrasolar Planet Gliese 876b Determined from Hubble Space Telescope Fine Guidance Sensor 3 Astrometry and High-Precision Radial Velocities". The Astrophysical Journal Letters. 581 (2): L115–L118. arXiv:astro-ph/0212101. Bibcode:2002ApJ...581L.115B. doi:10.1086/346073. S2CID18430973.
familysearch.org
United States Census, 1940, database with images, FamilySearch : accessed 8 July 2019, Maryland > Baltimore City > Baltimore City, Baltimore City, Ward 28 > 4-887 Baltimore City Ward 28 (Tract 28-4 - part) > image 5 of 36; citing Sixteenth Census of the United States, 1940, NARA digital publication T627. Records of the Bureau of the Census, 1790 - 2007, RG 29. Washington, D.C.: National Archives and Records Administration, 2012.
Benedict; et al. (2002). "A Mass for the Extrasolar Planet Gliese 876b Determined from Hubble Space Telescope Fine Guidance Sensor 3 Astrometry and High-Precision Radial Velocities". The Astrophysical Journal Letters. 581 (2): L115–L118. arXiv:astro-ph/0212101. Bibcode:2002ApJ...581L.115B. doi:10.1086/346073. S2CID18430973.
Netting, Ruth. "Nancy Grace Roman Bio."Archived December 30, 2018, at the Wayback Machine NASA Science For Researchers. National Aeronautics and Space Administration, August 29, 2011. Web. November 5, 2013. www.science.nasa.gov.
Benedict; et al. (2002). "A Mass for the Extrasolar Planet Gliese 876b Determined from Hubble Space Telescope Fine Guidance Sensor 3 Astrometry and High-Precision Radial Velocities". The Astrophysical Journal Letters. 581 (2): L115–L118. arXiv:astro-ph/0212101. Bibcode:2002ApJ...581L.115B. doi:10.1086/346073. S2CID18430973.
Netting, Ruth. "Nancy Grace Roman Bio."Archived December 30, 2018, at the Wayback Machine NASA Science For Researchers. National Aeronautics and Space Administration, August 29, 2011. Web. November 5, 2013. www.science.nasa.gov.
O'Keefe, John A.; Roman, Nancy G.; Yaplee, Benjamin S.; Eckels, Ann (2013). "Ellipsoid Parameters from Satellite Data". Contemporary Geodesy: Proceedings of a Conference Held at the Harvard College Observatory-Smithsonian Astrophysical Observatory, Cambridge, Massachusetts, December 1-2, 1958. Geophysical Monograph Series. pp. 45–51. doi:10.1029/GM004p0045. ISBN9781118668832. Retrieved May 5, 2020.