A good collection of thirty-eight views of Mars by the dual mission Mariner 6&7 (1969), Mariner 9 (1971), Viking Orbiter 1 & 2 (1976), including one view of the Martian surface taken by the Viking Lander 2 and one photograph of the spacecraft; with Viking Encounter Press Kit, NASA, Release No 76-103, 121 pp.1969-1976Thirty-eight vintage gelatin silver prints on fibre-based paper, 25.3 x 20.3 cm (10 x 8 in), with NASA captions on versoPlease note, there are no duplicate images in lots 404 and 405Provenance: from Tim Furniss collection