Scarce official NASA publication: Shuttle Performance: Lessons Learned, Parts 1 and 2 (NASA CP-2283). Washington, DC: 1983. Softcover, 8.5 x 11, totaling 1401 pages. The books contain the proceedings of a conference held at NASA Langley Research Center in Hampton, Virginia, from March 8-10, 1983, which covered what was learned during Space Shuttle missions STS-1 through STS-5. In very good to fine condition, with tears and chipping to the wrappers of the first volume.