Scholars Portal
1953-2026
Preserved
2026-03-19
Preserved : 1 (1, 2); 2 (1, 2); 3 (1, 2); 4 (1, 2); 5 (1, 2); 6 (1, 2); 7 (1, 2); 8 (1, 2); 9 (1, 2); 10 (1, 2); 11 (1, 2); 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 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 50 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4); 57 (1 to 4); 58 (1 to 4); 59 (1 to 4); 60 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 4); 69 (1 to 4); 70 (1 to 4); 71 (1 to 4); 72 (2 to 4); 73 (1 to 4); 74 (1)
Internet Archive
1953-2015
Preserved
2025-08-08
1 to 62
CLOCKSS Archive
1953-2026
In Progress
2026-04-06
1 to 55, 64 to 74
LOCKSS Archive
1953-2026
In Progress
2026-04-06
1 to 50, 57, 73, 74
Portico
1953-2026
Preserved
2026-04-09
Preserved : 1953: 1(1-2), 1954: 2(1-2), 1955: 3(1-2), 1956: 4(1-2), 1957: 5(1-2), 1958: 6(1-2), 1959: 7(1-2), 1960: 8(1-2), 1961: 9(1-2), 1962: 10(1-2), 1963: 11(1-2), 1964: 12(1-4), 1965: 13(1-4), 1966: 14(1-4), 1967: 15(1-4), 1968: 16(1-4), 1969: 17(1-4), 1970: 18(1-4), 1971: 19(1-4), 1972: 20(1-4), 1973: 21(1-4), 1974: 22(1-4), 1975: 23(1-4), 1976: 24(1-4), 1977: 25(1-4), 1978: 26(1-4), 1979: 27(1-4), 1980: 28(1-4), 1981: 29(1-4), 1982: 30(1-4), 1983: 31(1-4), 1984: 32(1-4), 1985: 33(1-4), 1986: 34(1-4), 1987: 35(1-4), 1988: 36(1-4), 1989: 37(1-4), 1990: 38(1-4), 1991: 39(1-4), 1992: 40(1-4), 1993: 41(1-4), 1994: 42(1-4), 1995: 43(1-4), 1996: 44(1-4), 1997: 45(1-4), 1998: 46(1-4), 1999: 47(1-4), 2000: 48(1-4), 2001: 49(1-4), 2002: 50(1-4), 2003: 51(1-4), 2004: 52(1-4), 2005: 53(1-4), 2006: 54(1-4), 2007: 55(1-4), 2008/2009: 56(1-4), 2009/2010: 57(1-4), 2010/2011: 58(1-4), 2011/2012: 59(1-4), 2012/2013: 60(1-4), 2013/2014: 61(1-4), 2014/2015: 62(1-4), 2015/2016: 63(2-4), 2016/2017: 64(1-4), 2017/2018: 65(1-4), 2018/2019: 66(1-4), 2019/2020: 67(1-4), 2020: 68(1-3), 2021/2022: 69(1, 3-4), 2022/2023: 70(1-4), 2023/2024: 71(1-4), 2024/2025: 72(1-4), 2025/2026: 73(1-4), 2026: 74(1)
LOCKSS Archive
2003-2024
Preserved
2026-04-06
51 to 56, 58 to 72
CLOCKSS Archive
2008-2015
Preserved
2026-04-06
56 to 63
Library of Congress
2010-2024
Preserved
2025-04-07
57 (4); 58 (1 to 4); 59 (1 to 4); 60 (1 to 4); 61 (1 to 4); 62 (1 to 4); 63 (1 to 4); 64 (1 to 4); 65 (1 to 4); 66 (1 to 4); 67 (1 to 4); 68 (1 to 4); 69 (1 to 4); 70 (1 to 4); 71 (1 to 4); 72 (1 to 3)
National Library of the Netherlands
1959-2019
Preserved
2024-12-15
Preserved : 7 (1); 15 (2); 19 (4); 28 (2); 51 (1); 52 (4); 53 (1-4); 54 (1-4); 55 (1-4); 56 (1-3); 57 (1-4); 58 (1-4); 59 (1, 2, 4); 60 (1-4); 61 (1-4); 62 (1-4); 63 (1, 2, 4); 64 (1-4); 65 (1-4); 66 (1-4); 67 (1-3)
British Library
-
Preserved
2019-09-18
Preserved : 61 (4), 62 (1 to 4), 63 (1 to 4), 64 (1 to 4), 65 (1 to 4), 66 (1 to 3)