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Prize contests, 1920, 1932-33, AFA FC EH 22
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Staff, 1935-42, AFA FC EH 27
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Eclipse committee, 1925-40, AFA FC EH 18
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International Education Board, 1927-28, AFA FC EH 10
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Miscellaneous correspondence, AFA FC EH 17A
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Shapley, 1939, AFA FC EH 5
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Oosterhoff, 1928-64, AFA FC EH 4
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Kuiper, 1931, AFA FC EH 13
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Position 1935, 1935, AFA FC EH 26
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Variable stars Harvard, AFA FC EH 19
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Various notes, AFA FC EH 23
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Zeiss, 1913-40, AFA FC EH 37
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Pleiades proper motions, AFA FC EH 20
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t Hart, 1935-36, AFA FC EH 36
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Student essays, AFA FC EH 21
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Outgoing mail, 1939-42, AFA FC EH 17
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Sitter, A. de, 1940, AFA FC EH 5A
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Corning, 1934, AFA FC EH 32
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Defense ministry, 1938, AFA FC EH 8
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Bosscha Observatory, 1938, AFA FC EH 7
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Reichsschule Valkenburg, 1944, AFA FC EH 12
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Enschedé, 1934-43, AFA FC EH 33
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Kuiper, 1935, AFA FC EH 2
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Annual reports, c. 1928-31, AFA FC EH 24
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