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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (1); 2; 3 (2); 4 (1, 2); 5 (1, 2); 6 (1, 2); 7 (1, 2); 8 (1 to 3); 9 (1 to 3); 10 (1 to 3); 11 (1 to 3); 12 (1 to 3); 13 (1 to 3); 14 (1 to 3); 15 (1 to 3); 16 (1 to 3); 17 (1 to 3); 18 (1 to 3); 19 (1 to 3); 20 (1 to 3); 21 (1 to 3); 22 (1 to 3); 23 (1 to 4); 24 (1 to 4); 25 (1 to 4); 26 (1 to 4); 27 (1 to 4); 28 (1 to 4); 29 (1 to 4); 30 (1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 40 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 3); 45 (1 to 3); 46 (1 to 3); 47 (1 to 3); 48 (1 to 3); 49 (1 to 3); 50 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (1, 2-3); 56 (1 to 3); 57 (1, 2-3); 58 (1 to 3); 59 (1 to 3); 60 (1 to 3); 61 (1 to 3); 62 (2); 63 (1 to 3); 64 (1 to 3); 65 (1 to 3); 66 (1 to 3); 67 (1 to 3); 68 (1 to 3); 69 (1 to 3); 70 (1 to 3); 71 (1 to 3); 72 (1 to 4); 73 (1 to 4); 74 (1 to 4); 75 (1)
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Internet Archive
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Preserved
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2025-08-08
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1 to 43
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CLOCKSS Archive
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Preserved
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2026-04-13
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1 to 75
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Portico
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Preserved
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2026-04-16
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Preserved : 1970: 4(2), 1971: 5(1-2)
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Portico
|
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Preserved
|
2026-04-16
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Preserved : 1973: 7(1)
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Portico
|
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Preserved
|
2026-04-16
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Preserved : 1988: 22(1)
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Portico
|
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Preserved
|
2026-04-16
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Preserved : 1997: 31(1-4), 1998: 32(1-4), 1999: 33(1-4), 2000: 34(1-4), 2001: 35(1-4), 2002: 36(1-4), 2003: 37(1-4), 2004: 38(1-4), 2005: 39(1-4), 2006: 40(1-4), 2007: 41(1-4), 2008: 42(1-4), 2009: 43(1-4), 2010: 44(1-3), 2010: 45(1-3), 2011: 46(1-3), 2011: 47(1-3), 2012: 48(1-3), 2012: 49(1, 3), 2013: 50(1-3), 2013: 51(1-2), 2014: 52(1-3), 2014: 53(1-3), 2015: 54(1-3), 2015: 55(1-3), 2016: 56(1-3), 2016: 57(1-3), 2017: 58(1-3), 2017: 59(1-3), 2018: 60(1-3), 2018: 61(1-3), 2019: 62(1-3), 2019: 63(1-3), 2019/2020: 64(1-3), 2020: 65(1-3), 2021: 66(1-3), 2021: 67(1-3), 2022: 68(1-3), 2022: 69(1-3), 2023: 70(1-3), 2023: 71(1-3), 2024: 72(1-4), 2024: 73(1-3), 2025: 74(1-4), 2026: 75(1-2)
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LOCKSS Archive
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In Progress
|
2026-04-13
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48, 49, 62, 63
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|
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LOCKSS Archive
|
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Preserved
|
2026-04-13
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50 to 61
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Library of Congress
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Preserved
|
2025-04-07
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60 (2, 3); 61 (1 to 3); 62 (1 to 3); 63 (1 to 3); 64 (1 to 3); 65 (1 to 3); 66 (1 to 3); 67 (1 to 3); 68 (1 to 3); 69 (1 to 3); 70 (1 to 3); 71 (1 to 3); 72 (1 to 4); 73 (1 to 3)
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Scholars Portal
|
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Preserved
|
2026-03-19
|
|
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Preserved : 75 (2)
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National Digital Preservation Program, China
|
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Preserved
|
2025-10-23
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Preserved : 4 (1 to 4); 5 (1 to 3); 6 (1 to 3); 7 (1 to 3); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 3); 45 (1 to 3); 46 (1 to 3); 47 (1 to 3); 48 (1 to 3); 49 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (1, 2); 56 (1 to 3); 57 (1, 2); 58 (1 to 3); 59 (1 to 3); 61 (1 to 3); 62 (1 to 3); 63 (1 to 3); 64 (1 to 3); 65 (1 to 3); 66 (1 to 3); 67 (1 to 3); 68 (1 to 3); 69 (1 to 3); 71 (1 to 3); 72 (1 to 4); 73 (1 to 4)
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National Digital Preservation Program, China
|
|
Preserved
|
2025-12-04
|
|
|
Preserved : 4 (1 to 4); 5 (1 to 3); 6 (1 to 3); 7 (1 to 3); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 3); 45 (1 to 3); 46 (1 to 3); 47 (1 to 3); 48 (1 to 3); 49 (1 to 3); 51 (1 to 3); 52 (1 to 3); 53 (1 to 3); 54 (1 to 3); 55 (1, 2); 56 (1 to 3); 57 (1, 2); 58 (1 to 3); 59 (1 to 3); 61 (1 to 3); 62 (1 to 3); 63 (1 to 3); 64 (1 to 3); 65 (1 to 3); 66 (1 to 3); 67 (1 to 3); 68 (1 to 3); 69 (1 to 3); 71 (1 to 3); 72 (1 to 4); 73 (1 to 4)
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|
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National Library of the Netherlands
|
|
Preserved
|
2024-12-15
|
|
|
Preserved : 31 (2-4); 32 (1-3); 33 (1, 4); 34 (1-4); 35 (1-4); 36 (1-4); 37 (1-4); 38 (1-4); 39 (1-4); 40 (1-4); 41 (1-4); 42 (1-4); 43 (1-4); 44 (1-3); 45 (1-3); 46 (1-3); 47 (1-3); 48 (1-3); 49 (1-3); 50 (1-3); 51 (1-3); 52 (1-3); 53 (1-3); 54 (1-3); 55 (1, 2-3); 56 (1-3); 57 (1, 2-3); 58 (3); 59 (1-3); 60 (1-3); 61 (1-3); 62 (1-3); 63 (1, 2)
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