Scholars Portal
2000-2001
Preserved
2025-09-02
Preserved : 82 (1 to 12); 83 (, 1, 2 to 4 to 12); 84 (, 1 to 7 to 9 to 12); 85 (, 1 to 12, 61); 2000; 2001
Internet Archive
1947-2010
Preserved
2025-08-08
1 to 103
CLOCKSS Archive
2008-2016
Preserved
2026-02-09
98 to 115
LOCKSS Archive
1947-2020
In Progress
2026-02-09
1 to 123
CLOCKSS Archive
2018-2026
Preserved
2026-02-09
118 to 134
Portico
1947-1947
Preserved
2026-02-12
Preserved : 1947: 1(2)
Portico
1948-1949
Preserved
2026-02-12
Preserved : 1948: 2(3), 1949: 3(1)
Portico
1951-1951
Preserved
2026-02-12
Preserved : 1951: 5(1, 3)
Portico
1953-1953
Preserved
2026-02-12
Preserved : 1953: 7(1)
Portico
1955-1955
Preserved
2026-02-12
Preserved : 1955: 9(4)
Portico
1957-1958
Preserved
2026-02-12
Preserved : 1957: 11(2), 1958: 12(2-4)
Portico
1962-1963
Preserved
2026-02-12
Preserved : 1962: 16(1), 1963: 17(1)
Portico
1964-1964
Preserved
2026-02-12
Preserved : 1964: 18(2)
Portico
1965-1966
Preserved
2026-02-12
Preserved : 1965: 19(4), 1966: 20(1)
Portico
1968-1970
Preserved
2026-02-12
Preserved : 1968: 22(4), 1969: 23(1, 4), 1970: 24(2)
Portico
1971-2026
Preserved
2026-02-12
Preserved : 1971: 25(2), 1972: 26(1, 3, 5-6), 1973: 27(1-3, 5-6), 1973: 28(1), 1974: 29(1-5), 1974: 30(1-4, 6), 1975: 31(1-3, 5-6), 1975: 32(1-2, 4-6), 1976: 33(1-6), 1976: 34(1-6), 1977: 35(1-4, 6), 1977: 36(1-6), 1978: 37(1-6), 1978: 38(1-2, 4-6), 1979: 39(1-6), 1979: 40(1-6), 1980: 41(1-6), 1980: 42(2-6), 1981: 43(2-6), 1981: 44(1-6), 1982: 45(1-6), 1982: 46(1-6), 1983: 47(1-6), 1983: 48(1-6), 1984: 49(1-6), 1984: 50(1-6), 1985: 51(1, 3-5), 1985: 52(1-5), 1986: 53(1-5), 1986: 54(1, 3, 6), 1987: 55(1-6), 1987: 56(1-6), 1988: 57(2-6), 1988: 58(1-6), 1989: 59(1-6), 1989: 60(1-2, 4-6), 1990: 61(1-6), 1990: 62(1-6), 1991: 63(1-6), 1991: 64(1-6), 1992: 65(1-6), 1992: 66(1-6), 1993: 67(1-6), 1993: 68(1-6), 1994: 69(1-6), 1994: 70(1-6), 1995: 71(1-6), 1995: 72(1-6), 1996: 73(1-7, 9-11), 1996: 74(3-12), 1997: 75(1, S 1, 2-5, 7-12), 1997: 76(1, S 1, 2-12), 1998: 77(1, S 1, 2-7, 9-12), 1998: 78(1, S 1, 2, S 2, 3-11), 1999: 79(1-12), 1999: 80(1-7, 9-12), 1999: 81(1-8), 2000: 82(1-12), 2000: 83(1, S 1, 2-12), 2001: 84(1, S 1, 2, S 2, 3-12), 2001: 85(1, S 1, 2, S 2, 3-12), 2002: 86(1, S 1, 2-12), 2002: 87(1-12), 2003: 88(1, S 1, 2-12), 2003: 89(1, S 1, 2, S 2, 3, S 3, 4-12), 2004: 90(1, S 1, 2-12), 2004: 91(1, S 1, 2, S 2, 3-12), 2005: 92(1, S 1, 2-12), 2005: 93(1, S 1, 2-12), 2006: 94(1-12), 2006: 95(1, S 1, 2-12), 2007: 96(1-12), 2007: 97(1-12), 2008: 98(1-12), 2008: 99(1, S 1, 2-12), 2009: 100(1-12), 2009: 101(1, S 1, 2, S 2, 3-12), 2010: 102(1, S 1, 2-12), 2010: 103(1-12), 2011: 104(1-12), 2011: 105(1, S 1, 2, S 2, 3-12), 2012: 106(1-12), 2012: 107(1, S 1, 2-11), 2013: 108(2-5, 7-9, 11-12), 2013: 109(1, 3-7, 9, 11-12), 2014: 110(1-12), 2014: 111(2-7, 9-12), 2015: 112(1, S 1, 2, 4-5, 7-12), 2015: 113(1, S 1, 3-12), 2016: 114(1-3, 5-12), 2016: 115(1-12), 2017: 116(1-12), 2017: 117(1-12), 2018: 118(1-12), 2018: 119(1, S 1, 2-12), 2019: 120(1-12), 2019: 121(1-12), 2020: 122(1-12), 2020: 123(1-12), 2021: 124(1-12), 2021: 125(1-12), 2022: 126(1-12), 2022: 127(1-12), 2023: 128(1-12), 2023: 129(1-12), 2024: 130(1-12), 2024: 131(1-10, 12), 2025: 132(2-4, 7-12), 2025: 133(1-12), 2026: 134(1-4)
National Digital Preservation Program, China
1997-2025
Preserved
2025-10-23
Preserved : 1 (1 to 9, 11, 12); 8 (1-2, 3-4, 5-6, 7 to 9, 11, 12); 9 (Suppl 1, 1 to 9, 11, 12); 11 (Suppl 1, 1 to 9, 11, 12); 12 (Suppl 1, 1 to 9, 11, 12); 13 (1 to 9, 11, 12); 14 (1 to 9, 11, 12); 15 (Suppl 1, 1 to 9, 11, 12); 16 (1 to 9, 11, 12); 17 (Suppl 1, 1 to 9, 11, 12); 18 (1 to 9, 11, 12); 19 (1 to 9, 11, 12); 75 (Suppl 1, 1 to 9, 11, 12); 76 (Suppl 1, 1 to 9, 11, 12); 77 (Suppl 3, 1 to 9, 11, 12); 78 (Suppl 3, 1 to 9, 11, 12); 79 (1, 2, 3-4, 5-6, 7-8, 9-1, 11-12); 81 (1 to 8); 82 (1 to 9, 11, 12); 83 (Suppl 1, 1 to 9, 11, 12); 84 (Suppl 1, 1 to 9, 11, 12); 85 (Suppl 1, 1 to 9, 11, 12); 86 (Suppl 1, 1 to 9, 11, 12); 87 (1 to 9, 11, 12); 88 (Suppl 1, 1 to 9, 11, 12); 89 (Suppl 1, 1 to 9, 11, 12); 91 (Suppl 1, 1 to 9, 11, 12); 92 (Suppl 1, 1 to 9, 11, 12); 93 (Suppl 1, 1 to 9, 11, 12); 94 (1 to 9, 11, 12); 95 (Suppl 1, 1 to 9, 11, 12); 96 (1 to 9, 11, 12); 97 (1 to 9, 11, 12); 98 (1 to 9, 11, 12); 99 (Suppl 1, 1 to 9, 11, 12); 111 (1 to 9, 11, 12); 112 (Suppl 1, 1 to 9, 11, 12); 113 (Suppl 1, 1 to 9, 11, 12); 114 (1 to 9, 11, 12); 115 (1 to 9, 11, 12); 116 (1 to 9, 11, 12); 117 (1 to 9, 11, 12); 118 (1 to 9, 11, 12); 119 (Suppl 1, 1 to 9, 11, 12); 121 (Suppl 1, 1 to 9, 11, 12); 122 (1 to 9, 11, 12); 123 (Suppl 1, 1 to 9, 11, 12); 124 (1 to 9, 11, 12); 125 (1 to 9, 11, 12); 126 (1 to 9, 11, 12); 127 (1 to 9, 11, 12); 128 (1 to 9, 11, 12); 129 (1 to 9, 11, 12); 131 (1 to 9, 11, 12); 132 (1 to 4)
National Digital Preservation Program, China
1997-2025
Preserved
2025-12-04
Preserved : 1 (1 to 9, 11, 12); 8 (1-2, 3-4, 5-6, 7 to 9, 11, 12); 9 (Suppl 1, 1 to 9, 11, 12); 11 (Suppl 1, 1 to 9, 11, 12); 12 (Suppl 1, 1 to 9, 11, 12); 13 (1 to 9, 11, 12); 14 (1 to 9, 11, 12); 15 (Suppl 1, 1 to 9, 11, 12); 16 (1 to 9, 11, 12); 17 (Suppl 1, 1 to 9, 11, 12); 18 (1 to 9, 11, 12); 19 (1 to 9, 11, 12); 75 (Suppl 1, 1 to 9, 11, 12); 76 (Suppl 1, 1 to 9, 11, 12); 77 (Suppl 3, 1 to 9, 11, 12); 78 (Suppl 3, 1 to 9, 11, 12); 79 (1, 2, 3-4, 5-6, 7-8, 9-1, 11-12); 81 (1 to 8); 82 (1 to 9, 11, 12); 83 (Suppl 1, 1 to 9, 11, 12); 84 (Suppl 1, 1 to 9, 11, 12); 85 (Suppl 1, 1 to 9, 11, 12); 86 (Suppl 1, 1 to 9, 11, 12); 87 (1 to 9, 11, 12); 88 (Suppl 1, 1 to 9, 11, 12); 89 (Suppl 1, 1 to 9, 11, 12); 91 (Suppl 1, 1 to 9, 11, 12); 92 (Suppl 1, 1 to 9, 11, 12); 93 (Suppl 1, 1 to 9, 11, 12); 94 (1 to 9, 11, 12); 95 (Suppl 1, 1 to 9, 11, 12); 96 (1 to 9, 11, 12); 97 (1 to 9, 11, 12); 98 (1 to 9, 11, 12); 99 (Suppl 1, 1 to 9, 11, 12); 111 (1 to 9, 11, 12); 112 (Suppl 1, 1 to 9, 11, 12); 113 (Suppl 1, 1 to 9, 11, 12); 114 (1 to 9, 11, 12); 115 (1 to 9, 11, 12); 116 (1 to 9, 11, 12); 117 (1 to 9, 11, 12); 118 (1 to 9, 11, 12); 119 (Suppl 1, 1 to 9, 11, 12); 121 (Suppl 1, 1 to 9, 11, 12); 122 (1 to 9, 11, 12); 123 (Suppl 1, 1 to 9, 11, 12); 124 (1 to 9, 11, 12); 125 (1 to 9, 11, 12); 126 (1 to 9, 11, 12); 127 (1 to 9, 11, 12); 128 (1 to 9, 11, 12); 129 (1 to 9, 11, 12); 131 (1 to 9, 11, 12); 132 (1 to 4)