Printed on front in white ink: Viking // Printed on back in black ink: THE VIKING MISSION TO MARS IS THE FIRST ATTEMPT TO SEARCH FOR / LIFE ON ANOTHER PLANET. / THIS EMBLEM FOR THE VIKING LANDER WAS DESIGNED BY PETER P. PUROL, / A HIGH SCHOOL STUDENT AT THE DUNDALK VOCATIONAL TECHNICAL CENTER / IN BALTIMORE, MARYLAND. IT WAS SELECTED IN A NATIONAL CONTEST / CONDUCTED BY THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION / AND THE NATIONAL SCIENCE TEACHERS ASSOCIATION IN APRIL 1975. / For sale by the Superintendent of Documents, / Washington. D.C. 20402 - Price 35 cents ; $8.65 per 100 / Stock No. 033-000-00626-8/Catalog No. NAS 1.2:V 69/2 / There is a minimum charge of $1.00 / for each mail order.