"Vanguard 2 1959-001A". NASA. 14 May 2020. Archived from the original on 9 March 2021. Retrieved 3 February 2021. This article incorporates text from this source, which is in the public domain.
McLaughlin Green, Constance; Lomask, Milton (1970). Vanguard: A History(PDF). The NASA Historical Series. NASA. pp. 282–287. Archived(PDF) from the original on 7 October 2021. Retrieved 15 February 2022.
C. McLaughlin Green, M. Lomask, "Vanguard, A HistoryArchived 20 December 2017 at the Wayback Machine", Chapter 5, Battle over Vehicle Specifications NASA SP-4202 This article incorporates text from this source, which is in the public domain.
navy.mil
nrl.navy.mil
"Vanguard Project". U.S. Naval Research Laboratory. 1 February 2010. Archived from the original on 23 December 2015. Retrieved 9 February 2016. This article incorporates text from this source, which is in the public domain.
planet4589.org
McDowell, Jonathan. "Launch Log". Jonathan's Space Report. Archived from the original on 13 November 2009. Retrieved 3 February 2021.
web.archive.org
McDowell, Jonathan. "Launch Log". Jonathan's Space Report. Archived from the original on 13 November 2009. Retrieved 3 February 2021.
"Vanguard 2 1959-001A". NASA. 14 May 2020. Archived from the original on 9 March 2021. Retrieved 3 February 2021. This article incorporates text from this source, which is in the public domain.
"Vanguard Project". U.S. Naval Research Laboratory. 1 February 2010. Archived from the original on 23 December 2015. Retrieved 9 February 2016. This article incorporates text from this source, which is in the public domain.
McLaughlin Green, Constance; Lomask, Milton (1970). Vanguard: A History(PDF). The NASA Historical Series. NASA. pp. 282–287. Archived(PDF) from the original on 7 October 2021. Retrieved 15 February 2022.
C. McLaughlin Green, M. Lomask, "Vanguard, A HistoryArchived 20 December 2017 at the Wayback Machine", Chapter 5, Battle over Vehicle Specifications NASA SP-4202 This article incorporates text from this source, which is in the public domain.