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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 47 (1 to 12); 48 (, 1 to 12); 49 (, 1 to 12); 50 (, 1 to 12); 51 (, 1 to 12); 52 (, 1 to 12); 53 (, 1 to 12); 54 (, 1 to 12); 55 (, 1 to 12); 56 (, 1 to 12); 57 (, 1 to 12); 58 (, 1 to 12); 59 (, 1 to 12); 60 (, 1 to 12); 61 (, 1 to 12); 62 (, 1 to 12); 63 (, 1 to 12); 64 (, 1 to 12); 65 (, 1 to 12); 66 (, 1 to 12); 67 (, 1 to 12); 68 (, 1 to 12); 69 (, 1 to 12); 70 (, 1 to 10, 11-12); 71 (, 1 to 12); 72 (, 1 to 7, 8-9, 10, 11-12); 73 (, 1-2, 3-4, 5-6); 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 27
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Portico
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Preserved
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2026-02-12
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Preserved : 1953: 1(1-6), 1954: 2(1-6), 1955: 3(1-6), 1956: 4(1-6), 1957: 5(1-6), 1958: 6(1-6), 1959: 7(1-6), 1960: 8(1-6), 1961: 9(1-6), 1962: 10(1-6), 1963: 11(1-6), 1964: 12(1-12), 1965: 13(1-8), 1966: 14(1-12), 1967: 15(1-12), 1968: 16(1-12), 1969: 17(1-12), 1970/1983: 18(1-12), 1971: 19(1-3, 5-7, 9-12), 1972: 20(1-12), 1973: 21(1-12), 1974: 22(1-12), 1975: 23(1-12), 1976: 24(1-12), 1977: 25(1-12), 1978: 26(1-12), 1979: 27(1-12), 1980: 28(1-12), 1981: 29(1-12), 1982: 30(1-12), 1983: 31(1-12), 1984: 32(1-12), 1985: 33(1-12), 1986: 34(1-12), 1987: 35(1-12), 1988: 36(1-12), 1989: 37(1-12), 1990: 38(1-12), 1991: 39(1-12), 1992: 40(1-12), 1993: 41(1-12), 1994: 42(1-12), 1995: 43(1-12), 1996: 44(1-12), 1997: 45(1-12), 1998: 46(1-12), 1999: 47(1-12), 2000: 48(1-12), 2001: 49(1-12), 2002: 50(1-12), 2003: 51(1-12), 2004: 52(1-12), 2005: 53(1-12), 2006: 54(1-12), 2007: 55(1-12), 2008: 56(1-12), 2009: 57(1-12), 2010: 58(1-12), 2011: 59(1-12), 2012: 60(1-12), 2013: 61(1-12), 2014: 62(1-12), 2015: 63(1-12), 2016: 64(1-12), 2017: 65(1-12), 2018: 66(1-12), 2019: 67(1-12), 2020: 68(1-12), 2021: 69(1)
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Portico
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Preserved
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2026-02-12
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Preserved : 2021: 69(7-12), 2022: 70(1-12), 2023: 71(1-12), 2024: 72(1-12), 2025: 73(1-8)
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LOCKSS Archive
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Preserved
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2026-02-09
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52 to 58
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CLOCKSS Archive
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In Progress
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2026-02-09
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1 to 55, 64 to 73
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LOCKSS Archive
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In Progress
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2026-02-09
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1 to 50, 73
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LOCKSS Archive
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Preserved
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2026-02-09
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51, 59 to 72
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CLOCKSS Archive
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Preserved
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2026-02-09
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56 to 63
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Library of Congress
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Preserved
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2025-04-07
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58 (1 to 12); 59 (1 to 12); 60 (1 to 12); 61 (1 to 12); 62 (1 to 12); 63 (1 to 12); 64 (1 to 12); 65 (1 to 12); 66 (1 to 12); 67 (1 to 12); 68 (1 to 12); 69 (1 to 12); 70 (1 to 11-12); 71 (1 to 12); 72 (1 to 8-9, 10)
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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 : 4; 6 (3-6); 7 (1, 2); 8 (1, 3); 9 (4); 10 (1-6); 11 (4); 14 (9); 15 (5); 16 (7, 10); 17 (9); 18 (6); 23 (1-12); 24 (1-12); 25 (1-12); 26 (1-12); 27 (1-12); 28 (1-12); 29 (1-12); 30 (1-12); 31 (1-12); 32 (1-12); 33 (1-12); 34 (1-12); 35 (1-12); 36 (1-12); 37 (1-12); 38 (1-12); 39 (1-12); 40 (1-12); 41 (1-12); 42 (1-12); 43 (1-12); 44 (1-12); 47 (10); 49 (3); 50 (6); 51 (2, 10, 11); 52 (4, 6, 11); 53 (4, 12); 54 (9, 10, 12); 55 (11); 59 (3, 5-8, 12); 60 (1-12); 61 (1-12); 62 (1-12); 63 (1-8, 10, 12); 64 (1-12); 65 (1-12); 66 (1, 3-12); 67 (1-11)
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British Library
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Preserved
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2019-09-18
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Preserved : 62 (1 to 12), 63 (1 to 12), 64 (1 to 12), 65 (1 to 12), 66 (1 to 10)
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