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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1 to 4); 2 (, 1 to 6, 16); 3 (, 1 to 6); 4 (, 1 to 12); 5 (, 1 to 12); 6 (, 1 to 12); 7 (, 1 to 12); 8 (, 1 to 12); 9 (, 1 to 12); 10 (, 1 to 12); 11 (, 1 to 12); 12 (, 1 to 12); 13 (, 1 to 12); 14 (, 1 to 12); 15 (, 1 to 12); 16 (, 1 to 12); 17 (, 1 to 12); 18 (, 1 to 12); 19 (, 1 to 12); 20 (, 1 to 12); 21 (, 1 to 12); 22 (, 1 to 12); 23 (, 1 to 12); 24 (, 1 to 12); 25 (, 1 to 12); 26 (, 1 to 24); 27 (, 1 to 24); 28 (, 1 to 24); 29 (, 1 to 24); 30 (, 1 to 24); 31 (, 1 to 24); 32 (, 1 to 24); 33 (, 1 to 24); 34 (, 1 to 24); 35 (, 1 to 24); 36 (, 1 to 24); 37 (, 1 to 24); 38 (, 1 to 24); 39 (, 1 to 15, 16-17, 18 to 24); 40 (, 1 to 8, 9-10, 11 to 24); 41 (, 1 to 24); 42 (, 1 to 24); 43 (, 1 to 22, 23-24); 44 (, 1 to 24); 45 (, 1 to 24); 46 (, 1 to 24); 47 (, 1 to 24); 48 (, 1 to 24); 49 (, 1 to 24); 50 (, 1 to 24); 51 (, 1 to 24); 52 (, 1 to 24); 53 (, 1 to 24); 54 (, 1 to 24); 55 (, 1 to 36); 56 (, 1 to 36); 57 (, 1 to 48); 58 (, 1 to 48); 59 (, 1 to 48); 60 (, 1 to 27); 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
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Internet Archive
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Preserved
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2025-08-08
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1 to 35
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CLOCKSS Archive
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Preserved
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2026-02-09
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1 to 61
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Portico
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Preserved
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2026-02-12
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Preserved : 1966: 1(1-4), 1967: 2(1-6), 1968: 3(1-6), 1969: 4(1-12), 1970: 5(1-12), 1971: 6(1-12), 1972: 7(1-12), 1973: 8(1-12), 1974: 9(1-12), 1975: 10(1-12), 1976: 11(1-12), 1977: 12(1-12), 1978: 13(1-12), 1979: 14(1-12), 1980: 15(1-12), 1981: 16(1-12), 1982: 17(1-12), 1983: 18(1-12), 1984: 19(1-12), 1985: 20(1-12), 1986: 21(1-12), 1987: 22(1-12), 1988: 23(1-12), 1989: 24(1-12), 1990: 25(1-12), 1991: 26(1-24), 1992: 27(1-24), 1993/2004: 28(1-24), 1994/2004: 29(1-24), 1995/2004: 30(1-24), 1996: 31(1-24), 1997: 32(4-6, 8, 15, 18, 21-24)
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Portico
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Preserved
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2026-02-12
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Preserved : 1999: 34(8)
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Portico
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Preserved
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2026-02-12
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Preserved : 2000: 35(20, 24), 2001: 36(18, 23), 2002: 37(1, 3, 8, 10, 17, 23), 2003: 38(4, 8), 2004: 39(2, 4, 6, 8, 10, 13, 20-21), 2005: 40(2, 15-16, 18, 23), 2006: 41(1-2, 4-8, 10-15, 17-19, 21, 23), 2007: 42(3, 5, 7-19, 22, 24), 2008: 43(1-6, 8-24), 2009: 44(1-14, 16-17, 19, 22-24), 2010: 45(1-4)
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LOCKSS Archive
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Preserved
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2026-02-09
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35 to 53
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Portico
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Preserved
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2026-02-12
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Preserved : 2011: 46(13-18, 20-22, 24), 2012: 47(1, 10, 15, 17-18, 23-24), 2013: 48(1-24), 2014: 49(1-24), 2015: 50(1-3, 5, 8-24), 2016: 51(1-24), 2017: 52(1-24), 2018: 53(1-24), 2019: 54(1-24), 2019/2020: 55(1-36), 2020/2021: 56(1-36), 2022: 57(1-48), 2023: 58(4-48), 2024: 59(1-42, 45, 47), 2025: 60(1-7, 9-10, 12, 14-48), 2026: 61(1-8)
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LOCKSS Archive
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In Progress
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2026-02-09
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54
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Library of Congress
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Preserved
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2025-04-07
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51 (22); 52 (4, 10); 53 (9 to 24); 54 (1 to 24); 55 (1 to 36); 56 (1 to 36); 57 (1 to 32, 34 to 48); 58 (1 to 48); 59 (1 to 37, 39, 47); 60 (1, 2)
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National Digital Preservation Program, China
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Preserved
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2025-10-23
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Preserved : 4 (1 to 9, 11 to 19, 21 to 24); 5 (1 to 9, 11 to 19, 21 to 24); 32 (1 to 9, 11 to 19, 21 to 24); 33 (1 to 9, 11 to 19, 21 to 24); 34 (1 to 9, 11 to 19, 21 to 24); 35 (1 to 9, 11 to 19, 21 to 24); 36 (1 to 9, 11 to 19, 21 to 24); 37 (1 to 9, 11 to 19, 21 to 24); 38 (1 to 9, 11 to 19, 21 to 24); 39 (1 to 9, 11 to 16, 18, 19, 21 to 24); 41 (1 to 9, 11 to 19, 21 to 24); 42 (1 to 9, 11 to 19, 21 to 24); 43 (1 to 9, 11 to 19, 21 to 23); 44 (1 to 9, 11 to 19, 21 to 24); 45 (1 to 9, 11 to 19, 21 to 24); 46 (1 to 9, 11 to 19, 21 to 24); 47 (1 to 9, 11 to 19, 21 to 24); 48 (1 to 9, 11 to 19, 21 to 24); 49 (1 to 9, 11 to 19, 21 to 24); 51 (1 to 9, 11 to 19, 21 to 24); 52 (1 to 9, 11 to 19, 21 to 24); 53 (1 to 9, 11 to 19, 21 to 24); 54 (1 to 9, 11 to 19, 21 to 24); 55 (1 to 9, 11 to 19, 21 to 29, 31 to 36); 56 (1 to 9, 11 to 19, 21 to 29, 31 to 36); 57 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 58 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 59 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48)
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National Digital Preservation Program, China
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Preserved
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2025-12-04
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Preserved : 4 (1 to 9, 11 to 19, 21 to 24); 5 (1 to 9, 11 to 19, 21 to 24); 32 (1 to 9, 11 to 19, 21 to 24); 33 (1 to 9, 11 to 19, 21 to 24); 34 (1 to 9, 11 to 19, 21 to 24); 35 (1 to 9, 11 to 19, 21 to 24); 36 (1 to 9, 11 to 19, 21 to 24); 37 (1 to 9, 11 to 19, 21 to 24); 38 (1 to 9, 11 to 19, 21 to 24); 39 (1 to 9, 11 to 16, 18, 19, 21 to 24); 41 (1 to 9, 11 to 19, 21 to 24); 42 (1 to 9, 11 to 19, 21 to 24); 43 (1 to 9, 11 to 19, 21 to 23); 44 (1 to 9, 11 to 19, 21 to 24); 45 (1 to 9, 11 to 19, 21 to 24); 46 (1 to 9, 11 to 19, 21 to 24); 47 (1 to 9, 11 to 19, 21 to 24); 48 (1 to 9, 11 to 19, 21 to 24); 49 (1 to 9, 11 to 19, 21 to 24); 51 (1 to 9, 11 to 19, 21 to 24); 52 (1 to 9, 11 to 19, 21 to 24); 53 (1 to 9, 11 to 19, 21 to 24); 54 (1 to 9, 11 to 19, 21 to 24); 55 (1 to 9, 11 to 19, 21 to 29, 31 to 36); 56 (1 to 9, 11 to 19, 21 to 29, 31 to 36); 57 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 58 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48); 59 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 48)
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National Library of the Netherlands
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Preserved
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2024-12-15
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Preserved : 14 (16); 16 (2); 32 (1-24); 33 (1-24); 34 (1-24); 35 (1-24); 36 (1-24); 37 (1-24); 38 (1-24); 39 (1-7, 9-16, 18-24); 40 (1-8, 9-10, 11-24); 41 (1-15, 17-24); 42 (1-24); 43 (1-22, 23-24); 44 (1-24); 45 (1-24); 46 (1-24); 47 (1-24); 48 (1-24); 49 (1-24); 50 (1-24); 51 (1-24); 52 (1-24); 53 (1-24); 54 (1-24); 55 (1-4); 57 (14); 121 (1); 137 (15); 171 (40); 174 (31); 175 (47)
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