Worldwide, Space Topical Covers, 1964-1978. Several hundreds, virtually all cacheted, commemorating such as Project Mercury events, Smithsonian Milestones of Flight series (#10 earliest noted), and literally 100's of satellite and rocket launchings, etc, a few autographed by VIP's of various descriptions; very interesting, worth sorting through by the specialist. Estimate  $200 - 300. $0