Scholars Portal
1919-2025
Preserved
2025-09-02
Preserved : 1 (1 to 3); 2 (, 1 to 4); 3 (, 1 to 4); 4 (, 1 to 4); 5 (, 1 to 4); 6 (, 1 to 4); 7 (, 1 to 4); 8 (, 1 to 4); 9 (, 1 to 4); 10 (, 1 to 4); 11 (, 1 to 4); 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, 2 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 3, 4_Part_I); 30 (, 1 to 4); 31 (, 2, 3, 4_Part_2); 32 (, 1 to 3, 4_Part_2); 33 (, 1 to 3, 4_Part_2); 34 (, 1 to 5); 35 (, 1 to 5); 36 (, 1 to 5); 37 (, 1 to 5); 38 (, 1 to 5); 39 (, 1, 2 to 4, 5); 40 (, 1 to 5); 41 (, 1 to 5); 42 (, 1 to 5); 43 (, 1 to 3 to 5); 44 (, 1 to 5); 45 (, 1 to 5); 46 (, 1 to 5); 47 (, 1 to 5); 48 (, 1, 2, 4_Part_I, 5); 49 (, 1_Part_I, 2 to 5); 50 (, 1 to 5); 51 (, 1 to 5); 52 (, 1 to 5); 53 (, 1 to 5); 54 (, 1 to 3 to 5); 55 (, 1 to 3 to 5); 56 (, 1 to 5); 57 (, 1 to 5); 58 (, 1 to 3 to 5); 59 (, 1 to 5); 60 (, 1 to 5); 61 (, 1 to 3 to 5); 62 (, 1 to 5); 63 (, 1 to 5); 64 (, 1 to 5); 65 (, 1 to 5); 66 (, 1 to 5); 67 (, 1 to 5); 68 (, 1 to 5); 69 (, 1 to 5); 70 (, 1 to 5); 71 (, 1 to 5); 72 (, 1 to 5); 73 (, 1 to 5); 74 (, 1 to 5); 75 (, 1 to 5); 76 (, 1 to 5); 77 (, 1 to 5); 78 (, 1 to 5); 79 (, 1 to 5); 80 (, 1 to 5); 81 (, 1 to 5); 82 (, 1 to 5); 83 (, 1 to 5); 84 (, 1 to 5); 85 (, 1 to 5); 86 (, 1 to 5); 87 (, 1 to 5); 88 (, 1 to 5); 89 (, 1 to 5); 90 (, 1 to 5); 91 (, 1 to 5); 92 (, 1 to 5); 93 (, 1 to 5); 94 (, 1 to 5); 95 (, 1 to 5); 96 (, 1 to 5); 97 (, 1 to 5); 98 (, 1 to 5); 99 (, 1 to 5); 100 (, 1 to 5); 101 (, 1 to 5); 102 (, 1 to 5); 103 (, 1 to 5); 104 (, 1 to 5); 105 (, 1 to 5); 106 (, 1 to 5); 107 (, 1 to 4); 1919; 1920; 1921; 1922; 1923; 1924; 1925; 1926; 1927; 1928; 1929; 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973; 1974; 1975; 1976; 1977; 1978; 1979; 1980; 1981; 1982; 1983; 1984; 1985; 1986; 1987; 1988; 1989; 1990; 1991; 1992; 1993; 1994; 1995; 1996; 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024; 2025
Internet Archive
1919-2013
Preserved
2025-08-08
1 to 95
HathiTrust
1919-1919
Preserved
2025-11-01
v.1-3 1919-21
Technische Informationsbibliothek
1997-2021
Preserved
2026-01-13
vol.100:1-5;vol.101:1-5;vol.102:1-5;vol.103:1;vol.79:1-5;vol.80:1-5;vol.81:1-5;vol.82:1-5;vol.83:1-5;vol.84:1-5;vol.85:1-5;vol.86:2-5;vol.87:1-5;vol.88:1-5;vol.89:1-5;vol.90:1-5;vol.91:1-5;vol.92:1-5;vol.93:1-5;vol.94:1-5;vol.95:1-5;vol.96:1-5;vol.97:1-5;vol.98:1-5;vol.99:1-5
CLOCKSS Archive
1919-2026
Preserved
2026-02-09
1 to 108
Portico
1919-2026
Preserved
2026-02-12
Preserved : 1919: 1(1-3), 1920: 2(1-4), 1921: 3(1-4), 1922: 4(1-4), 1923: 5(1-4), 1924: 6(1-4), 1925: 7(1-4), 1926: 8(1-4), 1927: 9(1-4), 1928: 10(1-4), 1929: 11(1-4), 1930: 12(1-4), 1931: 13(1-4), 1932: 14(1-4), 1933: 15(1-4), 1934: 16(1-4), 1935: 17(1-4), 1936: 18(1-4), 1937: 19(1-4), 1938: 20(1-4), 1939: 21(1-4), 1940: 22(1-4), 1941: 23(1-4), 1942: 24(1-4), 1943: 25(1-4), 1944: 26(1-4), 1945: 27(1-4), 1946: 28(1-4), 1947: 29(1-4_p_I), 1948: 30(1-4), 1949: 31(1_p_2-4_p_1), 1950: 32(1-4_p_1), 1951: 33(1-4_p_1), 1952: 34(1-5), 1953: 35(1-5), 1954: 36(1-5), 1955: 37(1-5), 1956: 38(1-5), 1957: 39(1-5), 1958: 40(1-5), 1959: 41(1-5), 1960: 42(1-5), 1961: 43(1-5), 1962: 44(1-5), 1963: 45(1-5), 1964: 46(1-5), 1965: 47(1-5), 1966: 48(1-5), 1967: 49(1_p_I-5), 1968: 50(1-5), 1969: 51(1-5), 1970: 52(1-5), 1971: 53(1-5), 1972: 54(1-5), 1973: 55(1-5), 1974: 56(1-5), 1975: 57(1-5), 1976: 58(1-5), 1977: 59(1-5), 1978: 60(1-5), 1979: 61(1-5), 1980: 62(1-5), 1981: 63(1-5), 1982: 64(1-5), 1983: 65(1-5), 1984: 66(1-5), 1985: 67(1-5), 1986: 68(1-5), 1987: 69(1-5), 1988: 70(1-5), 1989: 71(1-5), 1990: 72(1-5), 1991: 73(1-5), 1992: 74(1-5), 1993: 75(1-5, Special Issue ial_Issue), 1994: 76(1-5), 1995: 77(1-5), 1996: 78(1-5), 1997: 79(1-5), 1998: 80(1-5), 1999: 81(1-5), 2000: 82(1-5), 2001: 83(1-5), 2002: 84(1-5), 2003: 85(1-5), 2004: 86(1-5), 2005: 87(1-5), 2006: 88(1-5), 2007: 89(1-5), 2008: 90(1-5), 2009: 91(1-5), 2010: 92(1-5), 2011: 93(1-5), 2012: 94(1-5), 2013: 95(1-5), 2014: 96(1-5), 2015: 97(1-5), 2016: 98(1-5), 2017: 99(1-5), 2018: 100(1-5), 2019: 101(1-5), 2020: 102(1-5), 2021: 103(1-5), 2022: 104(1-5), 2023: 105(1-5), 2024: 106(1-5), 2025: 107(1-5), 2026: 108(1)
Portico
1931-1931
Preserved
2026-02-12
Preserved : 1931: 13(3)
Portico
1942-1942
Preserved
2026-02-12
Preserved : 1942: 24(3)
Portico
1947-1947
Preserved
2026-02-12
Preserved : 1947: 29(2)
Portico
1956-1956
Preserved
2026-02-12
Preserved : 1956: 38(3)
Portico
1961-1961
Preserved
2026-02-12
Preserved : 1961: 43(2)
Portico
1966-1966
Preserved
2026-02-12
Preserved : 1966: 48(3_p_I)
Portico
1970-1970
Preserved
2026-02-12
Preserved : 1970: 52(3)
Portico
1988-1988
Preserved
2026-02-12
Preserved : 1988: 70(3-4)
LOCKSS Archive
1989-2018
Preserved
2026-02-09
71 to 87, 89 to 100
Portico
1990-1990
Preserved
2026-02-12
Preserved : 1990: 72(2)
Portico
1993-1993
Preserved
2026-02-12
Preserved : 1993: 75(5)
Portico
2003-2003
Preserved
2026-02-12
Preserved : 2003: 85(2)
Portico
2006-2006
Preserved
2026-02-12
Preserved : 2006: 88(1)
Portico
2008-2010
Preserved
2026-02-12
Preserved : 2008: 90(1-5), 2009: 91(1-5), 2010: 92(1-5)
CLOCKSS Archive
2008-2018
Preserved
2026-02-09
90 to 100
Portico
2014-2019
Preserved
2026-02-12
Preserved : 2014: 96(1-5), 2015: 97(1-5), 2016: 98(1-5), 2017: 99(1-5), 2018: 100(1-5), 2019: 101(1-5)
National Digital Preservation Program, China
1997-2020
Preserved
2025-10-23
Preserved : 1 (1 to 5); 8 (1 to 5); 9 (1 to 5); 11 (1 to 5); 12 (1 to 5); 79 (1 to 5); 81 (1 to 5); 82 (1 to 5); 83 (1 to 5); 84 (1 to 5); 85 (1 to 5); 86 (2 to 5); 87 (1 to 5); 88 (1 to 5); 89 (1 to 5); 91 (1 to 5); 92 (1 to 5); 93 (1 to 5); 94 (1 to 5); 95 (1 to 5); 96 (1 to 5); 97 (1 to 5); 98 (1 to 5); 99 (1 to 5)
National Digital Preservation Program, China
1997-2020
Preserved
2025-12-04
Preserved : 1 (1 to 5); 8 (1 to 5); 9 (1 to 5); 11 (1 to 5); 12 (1 to 5); 79 (1 to 5); 81 (1 to 5); 82 (1 to 5); 83 (1 to 5); 84 (1 to 5); 85 (1 to 5); 86 (2 to 5); 87 (1 to 5); 88 (1 to 5); 89 (1 to 5); 91 (1 to 5); 92 (1 to 5); 93 (1 to 5); 94 (1 to 5); 95 (1 to 5); 96 (1 to 5); 97 (1 to 5); 98 (1 to 5); 99 (1 to 5)
National Digital Preservation Program, China
0000-2019
Preserved
2025-10-23
Preserved : ; 1 (1 to 5); 9 (1 to 5); 11 (1 to 5); 47 (1 to 5); 89 (1 to 5); 91 (1 to 5); 92 (1 to 5); 93 (1 to 5); 94 (1 to 5); 95 (1 to 5); 96 (1 to 5); 97 (1 to 5); 98 (1 to 5); 99 (1 to 5)
National Digital Preservation Program, China
0000-2019
Preserved
2025-12-04
Preserved : ; 1 (1 to 5); 9 (1 to 5); 11 (1 to 5); 47 (1 to 5); 89 (1 to 5); 91 (1 to 5); 92 (1 to 5); 93 (1 to 5); 94 (1 to 5); 95 (1 to 5); 96 (1 to 5); 97 (1 to 5); 98 (1 to 5); 99 (1 to 5)
National Library of the Netherlands
2006-2007
Preserved
2024-12-15
Preserved : 88 (1-5); 89 (1-5)
British Library
-
Preserved
2019-09-18
Preserved : 96 (1 to 4), 97 (1 to 3; 5), 98 (1; 4 to 5), 99 (1 to 5), 100 (3)