Scholars Portal
1987-2025
Preserved
2026-03-19
Preserved : 1 (1 to 3); 2 (1 to 3); 3 (1, 2-3); 4 (1); 5 (3); 6 (1 to 3); 7 (1 to 3); 8 (1 to 3); 9 (1 to 3); 10 (1 to 3); 11 (1 to 3); 12 (1 to 3); 13 (1 to 3); 14 (1 to 3); 15 (1 to 3); 16 (1 to 3); 17 (1 to 3); 18 (1 to 3); 19 (1-2, 3); 20 (1 to 3); 21 (1 to 3); 22 (1-2, 3, 4); 23 (1 to 3); 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)
CLOCKSS Archive
1987-2025
Preserved
2026-04-13
ahead-of-print to 25, 27 to 35
LOCKSS Archive
1988-2024
Preserved
2026-04-13
1 to 34
LOCKSS Archive
2025-2025
In Progress
2026-04-13
35
Portico
1987-1991
Preserved
2026-04-23
Preserved : 1987/1988: 1(1-3), 1989: 2(1-3), 1990: 3(1-3), 1991: 4(1)
Portico
1993-2025
Preserved
2026-04-23
Preserved : 1993: 5(1-3), 1994/1995: 6(1-3), 1996/1997: 7(1-3), 1997/1998: 8(1-3), 1998/1999: 9(1-3), 1999/2000: 10(1-3), 2000/2001: 11(1-3), 2001/2002: 12(1-3), 2002/2003: 13(1-3), 2003/2004: 14(1-3), 2004/2005: 15(1-3), 2005/2006: 16(1-3), 2006/2007: 17(1-3), 2007/2008: 18(1-3), 2008/2009: 19(1-3), 2009/2010: 20(1-3), 2010/2011: 21(1-3), 2011/2012: 22(1-4), 2013: 23(1-3), 2014: 24(1-4), 2015: 25(1-4), 2016: 26(1-4), 2017: 27(1-4), 2018: 28(1-4), 2019: 29(1-4), 2020: 30(1-4), 2021: 31(1-4), 2022: 32(1-4), 2023: 33(1-4), 2024: 34(1-4), 2025: 35(1-4)
Library of Congress
2010-2024
Preserved
2025-04-07
20 (3); 21 (1 to 3); 22 (1-2, 3, 4); 23 (1 to 3); 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 3)
National Digital Preservation Program, China
1997-2024
Preserved
2025-12-04
Preserved : 1 (2, 3); 2 (1 to 3); 3 (1 to 4); 7 (3); 8 (1 to 3); 9 (1 to 3); 11 (1 to 3); 12 (1 to 3); 13 (1 to 3); 14 (1 to 3); 15 (1 to 3); 16 (1 to 3); 17 (1 to 3); 18 (1 to 3); 19 (1-2, 3); 21 (1 to 3); 22 (1-2, 3, 4); 23 (1 to 3); 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)