They could see a test version of the Viking landers that reached Mars in July of nineteen seventy-six.

VOA: special.2010.07.28

It was written in 1951 and it was published in 1957 by Viking.

这本小说是于1951年写成，1957年Viking出版的。

耶鲁公开课 - 1945年后的美国小说课程节选