
“VIKING SPACECRAFT: The mating of the Orbiter and Lander elements of the Viking spacecraft is shown at NASA’s Kennedy Space Center, Fla. Two Vikings will be launched on August 11 and August 21 from Cape Canaveral Fla., and are scheduled to arrive at Mars in July, 1976. The Lander elements of each spacecraft will soft-land on the planet’s surface and test for signs of life.”
As expected, identification of which pair this is, at multiple NASA & similarly ‘official’ and (one would think) knowledgeable sites…is ambiguous, inconclusive, and even contradictory. However - IF CORRECT - three separate NASA “Photography Index” publications, from 1981, 1983 & 1987, identify this photograph as being of Viking 1. Of course, if the identification in the initial publication is wrong, which is possible, then I'd expect the erroneous identification to be blindly propagated year after year.
Per SP-4212, “On Mars: Exploration of the Red Planet. 1958-1978”, the Viking 1 spacecraft were mated 8 March 1975.
1981, page 195:
ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19820024318...
Credit: NTRS website
1983:
books.google.com/books?id=GO1TAAAAMAAJ&pg=PA111&l...
1987:
books.google.com/books?id=9tdzs8kCUbkC&pg=PA111&l...
Both above credit: Google books website
It's always disappointing when the only place I seem to be able to find a mere digital image of a PUBLIC DOMAIN photograph is at one of the multiple money grubbing historical photo sites, for a preposterous amount of money. Just a wild guess that the following is one of them. And...if you want the image bad enough, you first have to create an account & login before being bent over, again, for a public domain image...WOW:
www.granger.com/results.asp?image=0185391&itemw=4&...
Credit: Granger Historical Picture Archive website