Scholars Portal
1988-2026
Preserved
2026-03-19
Preserved : 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, 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, 2, 3-4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 50 (1 to 4); 51 (1 to 4); 52 (1)
Internet Archive
1975-2012
Preserved
2025-08-08
1 to 38
LOCKSS Archive
1988-2024
Preserved
2026-03-30
14 to 50
CLOCKSS Archive
1988-2025
Preserved
2026-03-30
ahead-of-print, 14 to 51
LOCKSS Archive
2025-2026
In Progress
2026-03-30
51, 52
Portico
1991-2026
Preserved
2026-04-02
Preserved : 1991: 17(1-4), 1992/1993: 18(1-4), 1993/1994: 19(1-4), 1994/1995: 20(1-4), 1995/1996: 21(1-4), 1996/1997: 22(1-4), 1997/1998: 23(1-4), 1998/1999: 24(1-4), 1999/2000: 25(1-4), 2000/2001: 26(1-4), 2001/2002: 27(1-4), 2002/2003: 28(1-4), 2003/2004: 29(1-4), 2004/2005: 30(1-4), 2005/2006: 31(1-4), 2006/2007: 32(1-4), 2007/2008: 33(1-4), 2008/2009: 34(1-4), 2009: 35(1-4), 2010: 36(1-4), 2011: 37(1-4), 2012: 38(1-4), 2013: 39(1-4), 2014: 40(1-4), 2015: 41(1-4), 2016: 42(1-4), 2017: 43(1-4), 2018: 44(1-4), 2019: 45(1-4), 2020: 46(1-4), 2021: 47(1-4), 2022: 48(1-4), 2023: 49(1-4), 2024: 50(1-4), 2025: 51(1-4), 2026: 52(1)
National Digital Preservation Program, China
1997-2025
Preserved
2025-12-04
Preserved : 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 22; 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); 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 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1, 2, 3-4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 51 (1, 2)
Library of Congress
2017-2024
Preserved
2025-04-07
43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 3-4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 50 (1 to 4)