Two official NASA publications: a National Aeronautics and Space Administration Space Task Group report on the "Liberty Bell 7, July 21, 1961," documenting Gus Grissom's Mercury-Redstone 4 flight in text and image; and a National Aeronautics and Space Administration Manned Spacecraft Center report on "Astronaut John H. Glenn, Jr., Friendship 7, February 20, 1962," documenting Glenn's historic orbital flight in text and image. In fine condition, with some small stains to the cover of the earlier booklet.
