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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 1 (2 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 4); 7 (1 to 4); 8 (1 to 4); 9 (1 to 4); 10 (1 to 4); 11 (1 to 4); 12 (1 to 4); 13 (1 to 4); 14 (1 to 4); 15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 19 (1 to 4); 20 (1 to 4); 21 (1 to 4); 22 (1 to 4); 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 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 50 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 6); 56 (1 to 6); 57 (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 46
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CLOCKSS Archive
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Preserved
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2026-04-13
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1 to 57
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LOCKSS Archive
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In Progress
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2026-04-13
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43, 50
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LOCKSS Archive
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Preserved
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2026-04-13
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44 to 49
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Portico
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Preserved
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2026-04-23
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Preserved : 1970/1971: 1(1-4), 1971/1972: 2(1-4), 1972/1973: 3(1-4), 1973/1974: 4(1-4), 1974/1975: 5(1-4), 1975/1976: 6(1-4), 1976/1977: 7(1-4), 1977/1978: 8(1-4), 1978/1979: 9(1-4), 1979/1980: 10(1-4), 1980/1981: 11(1-4), 1981/1982: 12(1-4), 1982/1983: 13(1-4), 1983/1984: 14(1-4), 1984/1985: 15(1-4), 1985/1986: 16(1-4), 1986/1987: 17(1-4), 1987/1988: 18(1-4), 1988/1989: 19(1-4), 1989/1990: 20(1-4), 1990/1991: 21(1-4), 1991/1992: 22(1-4), 1992/1993: 23(1-4), 1993/1994: 24(1-4), 1994/1995: 25(1-4), 1995/1996: 26(1-4), 1996: 27(1-2)
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Portico
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Preserved
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2026-04-23
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Preserved : 1999: 30(1)
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Portico
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Preserved
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2026-04-23
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Preserved : 2003: 34(2)
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Portico
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Preserved
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2026-04-23
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Preserved : 2007: 37(4), 2007: 38(1-3), 2008: 39(3-4), 2009: 40(1-4), 2010: 41(1-6), 2011: 42(1-6), 2012: 43(2-4), 2013: 44(1-6), 2014: 45(1-6), 2015: 46(2-6), 2016: 47(1-6), 2017: 48(1-6), 2018: 49(1-6), 2019: 50(1-6), 2019/2020: 51(1-6), 2021: 52(1-6), 2022: 53(1-6), 2023: 54(1-6), 2024: 55(1-6), 2025: 56(1, 3-6), 2026: 57(1)
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Library of Congress
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Preserved
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2025-04-07
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49 (1 to 6); 50 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 6)
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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 : 3 (1 to 4); 4 (1 to 4); 5 (1 to 6); 27 (3, 4); 28 (1 to 4); 29 (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); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 6)
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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 : 3 (1 to 4); 4 (1 to 4); 5 (1 to 6); 27 (3, 4); 28 (1 to 4); 29 (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); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 6); 47 (1 to 6); 48 (1 to 6); 49 (1 to 6); 51 (1 to 6); 52 (1 to 6); 53 (1 to 6); 54 (1 to 6); 55 (1 to 6)
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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 : 28 (1-4); 29 (1-4); 30 (1-4); 31 (1-4); 32 (1-4); 33 (1-4); 34 (1-4); 35 (1-4); 36 (1-4); 37 (3); 38 (2-4); 39 (1-4); 40 (1-4); 41 (1-6); 42 (1-6); 43 (1-6); 44 (1-6); 45 (1-6); 46 (1-6); 47 (1-6); 48 (1-5, 6-7); 49 (1-6); 50 (1-6)
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