Scholars Portal
1985-2025
Preserved
2026-03-19
Preserved : 10 (1 to 4); 11 (1 to 4); 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 to 3); 20 (1 to 3); 21 (1 to 3); 22 (1, 2/3); 23 (1 to 3); 24 (1/2, 3); 25 (1/2, 3); 26 (1 to 3); 27 (1, 2/3); 28 (1 to 3); 29 (1, 2/3); 30 (1, 2/3); 31 (1 to 3); 32 (1 to 3); 33 (1 to 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1 to 3); 38 (1 to 3); 39 (1 to 3); 40 (1 to 3); 41 (1 to 4); 42 (1 to 3); 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 (2 to 4); 50 (1 to 4)
Portico
2006-2015
Preserved
2026-04-30
Preserved : 2006: 31(1-3), 2007: 32(1-3), 2008: 33(1-3), 2009: 34(1-3), 2010: 35(1-3), 2011: 36(1-3), 2012: 37(1-3), 2013: 38(1-3), 2014: 39(1-3), 2015: 40(1-3)
CLOCKSS Archive
1985-2021
Preserved
2026-04-27
10 to 46
LOCKSS Archive
1985-2024
Preserved
2026-04-27
10 to 49
LOCKSS Archive
2025-2026
In Progress
2026-04-27
50, 51
Portico
2011-2026
Preserved
2026-04-30
Preserved : 2011: 36(1-3), 2012: 37(1-3), 2013: 38(1-3), 2014: 39(1-3), 2015: 40(1-3), 2016: 41(1-4), 2017: 42(1-4), 2018: 43(1-4), 2019: 44(1-4), 2020: 45(1-4), 2021: 46(1-4), 2022: 47(1-4), 2023: 48(1-4), 2024: 49(1-4), 2025: 50(1-4), 2026: 51(1)
National Digital Preservation Program, China
1997-2024
Preserved
2025-12-04
Preserved : 3 (1, 2-3); 4 (1 to 3); 22 (1, 2-3); 23 (1 to 3); 24 (1-2, 3); 25 (1-2, 3); 26 (1 to 3); 27 (1, 2-3); 28 (1 to 3); 29 (1, 2-3); 31 (1 to 3); 32 (1 to 3); 33 (1 to 3); 34 (1 to 3); 35 (1 to 3); 36 (1 to 3); 37 (1 to 3); 38 (1 to 3); 39 (1 to 3); 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)
Library of Congress
2010-2024
Preserved
2025-04-07
35 (1 to 3); 36 (1 to 3); 37 (1 to 3); 38 (1 to 3); 39 (1 to 3); 40 (1 to 3); 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)