Vanguard launches in 1958
February 1958
5 Feb
Vanguard TV3 Backup
Vanguard
March 1958
17 Mar
Vanguard TV4
Vanguard
April 1958
29 Apr
Vanguard TV5
Vanguard
May 1958
27 May
Vanguard SLV-1
Vanguard
June 1958
26 Jun
Vanguard SLV-2
Vanguard
September 1958
26 Sep
Vanguard SLV-3
Vanguard