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Harvard-Smithsonian Center for Astrophysics Harvard Observatory Plate Stacks MF Series Plate Centers Click here for temporal distribution |
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![]() Entire Series (30090 plates) |
![]() 1915-1920 (2682 plates) |
![]() 1920-1930 (6282 plates) |
![]() 1930-1940 (11481 plates) |
![]() 1940-1950 (8512 plates) |
![]() 1950-1962 (1133 plates) |