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Proceedings of the National Academy of Sciences of the United States of America (Online)

Identifiers
Resource information
Archival Status
logo Keepers

Title proper: Proceedings of the National Academy of Sciences of the United States of America.

Other variant title: PNAS online ( <Oct. 30, 2007->:)

Other variant title: PNAS

Country:United States

Medium: Online

Digital Archives:

CLOCKSS Archive, CLOCKSS Archive,https://clockss.org, Online access with authorization, 1915/2014

CLOCKSS Archive, CLOCKSS Archive,https://clockss.org, Online access with authorization, 2013/2025, incomplete

LOCKSS Archive, Global LOCKSS Network,https://www.lockss.org, Online access with authorization, 1915/2024

LOCKSS Archive, Global LOCKSS Network,https://www.lockss.org, Online access with authorization, 2025/2025, incomplete

NDPP, China, National Science Library, Chinese Academy of Sciences,http://english.las.cas.cn, Online access with authorization, 2009/2024

HathiTrust, HathiTrust,https://catalog.hathitrust.org/Record/004527919, Restrictions unspecified, 1900/1929

HathiTrust, HathiTrust,https://catalog.hathitrust.org/Record/000636305, Restrictions unspecified, 1915/1929

Internet Archive Scholar, Internet Archive,https://archive.org/details/pub_proceedings-of-the-national-academy-of-sciences-usa, Unrestricted online access, 1914/2014

Portico, Portico,https://www.portico.org, Online access with authorization, 1915/2025


logo Keepers
StatusPublisherKeeperFromToUpdatedExtent of archive
Preserved

National Academy of Sciences

CLOCKSS Archive

1915

2014

17/11/2025

1 to 109, 111
In Progress

National Academy of Sciences

CLOCKSS Archive

2013

2025

17/11/2025

110, 112 to 122
Preserved

National Academy of Sciences [etc.]

HathiTrust

1900

1929

01/09/2025

v.1 (1915); v.3 (1917); v.5 (1919); v.4 (1918); v.3 (1917); v.2 (1916); v.1:4 (1915); v.1:1 (1915); v.7 (1921); v.2 (1916); v.1 (1915); v.6 (1920); v.5 (1919); v.4 (1918); v.4 (1918); v.2 (1916); v.2 (1916); v.8 (1922); v.1 (1915); v.4 (1918); v.7 (1921); v.7 (1921); v.1 (1915); v.3 (1917); v.5 (1919); v.3 (1917); v.8 (1922); v.6 (1920); v.6 (1920); v.6-7 (1920-1921); v.5 (1919); v.2 (1916); v.8 (1922); v.5 (1919); v.2 (1916); v.3 (1917); v.6 (1920); v.7 (1921); v.8 (1922); v.3 (1917); v.1 (1915); v.4 (1918); v.2 (1916); v.4 (1918); v.7 (1921); v.5 (1919); v.5 (1919); v.4 (1918); v.6 (1920); v.1 (1915); v.3 (1917); v.1 (1915); v.8 (1922); v.1 (1915); v.5 (1919); v.2 (1916); v.3 (1917); v.7 (1921); v.4 (1918); V.1/10 1915/1925 Index; v.4-5 (1918-19); Index v.85; v.87 p.9073-10068 1900 index; v.1-10 1915-26 index; v.9 1923; v.10 1929; v.13 1927; v.15 1929; v.11 1925; v.14 1928; v.6 1920; v.5 1919; v.8 1922; v.3 1917; v.1 1915; v.4 1918; v.2 1916; v.7 1921; v.12 1926; v.5; v.10; v.11
Preserved

National Academy of Sciences [etc.], 1915-1979.

HathiTrust

1915

1929

01/09/2025

v.1 1915; v.2 1916; v.3 1917; v.4 1918; v.5 1919; v.6 1920; v.7 1921; v.8 1922; v.9 1923; v.10 1924; v.11 1925; v.12 1926; v.13 1927; v.14 1928; v.15 1929; v.10 1924; v.11 1925; v.13 1927; v.14 1928; v.15 1929; v.12 1926; v.6 1920; v.7 1921; v.8 1922; v.9 1923
Preserved

National Academy of Sciences

Internet Archive

1914

2014

08/08/2025

1 to 121
Preserved

National Academy of Sciences

LOCKSS Archive

1915

2024

17/11/2025

122
In Progress

National Academy of Sciences

LOCKSS Archive

2025

2025

17/11/2025

Preserved : 11 (Supplement_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 12 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 16 (Supplement_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 17 (suppl_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 18 (Supplement_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 19 (Supplement_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 111 (Supplement_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 112 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 113 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 114 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 115 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 116 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 117 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 118 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 119 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 121 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52)
Preserved

National Academy of Sciences

National Digital Preservation Program, China

2009

2024

23/07/2025

Preserved : 11 (Supplement_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 12 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 16 (Supplement_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 17 (suppl_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 18 (Supplement_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 19 (Supplement_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 111 (Supplement_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 112 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 113 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 114 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 115 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 116 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 117 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 118 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 119 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 121 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52)
Preserved

National Academy of Sciences

National Digital Preservation Program, China

2009

2024

23/10/2025

Preserved : 1915: 1(1-12), 1916: 2(1-12), 1917: 3(1-12), 1918: 4(1-12), 1919: 5(1-12), 1920: 6(1-12), 1921: 7(1-12), 1922: 8(1-12), 1923: 9(1-12), 1924: 10(1-12), 1925: 11(1-12), 1926: 12(1-12), 1927: 13(1-12), 1928: 14(1-12), 1929: 15(1-12), 1930: 16(1-12), 1931: 17(1-12), 1932: 18(1-12), 1933: 19(1-12), 1934: 20(1-12), 1935: 21(1-12), 1936: 22(1-12), 1937: 23(1-12), 1938: 24(1-12), 1939: 25(1-12), 1940: 26(1-12), 1941: 27(1-12), 1942: 28(1-12), 1943: 29(1-11), 1944: 30(1-12), 1945: 31(1-12), 1946: 32(1-12), 1947: 33(1-12), 1948: 34(1-12), 1949: 35(1-12), 1950: 36(1-12), 1951: 37(1-12), 1952: 38(1-12), 1953: 39(1-12), 1954: 40(1-12), 1955: 41(1-12), 1956: 42(1-12), 1957: 43(1-12), 1958: 44(1-12), 1959: 45(1-12), 1960: 46(1-12), 1961: 47(1-12), 1962: 48(1-12), 1963: 49(1-6), 1963: 50(1-6), 1964: 51(1-6), 1964: 52(1-6), 1965: 53(1-6), 1965: 54(1-6), 1966: 55(1-6), 1966: 56(1-6), 1967: 57(1-6), 1967: 58(1-6), 1968: 59(1-4), 1968: 60(1-4), 1968: 61(1-4), 1969: 62(1-4), 1969: 63(1-4), 1969: 64(1-4), 1970: 65(1-4), 1970: 66(1-4), 1970: 67(1-4), 1971: 68(1-12), 1972: 69(1-12), 1973: 70(1-12), 1974: 71(1-12), 1975: 72(1-12), 1976: 73(1-12), 1977: 74(1-12), 1978: 75(1-12), 1979: 76(1-12), 1980: 77(1-12), 1981: 78(1-12), 1982: 79(1-24), 1983: 80(1-24), 1984: 81(1-24), 1985: 82(1-24), 1986: 83(1-24), 1987: 84(1-24), 1988: 85(1-24), 1989: 86(1-24), 1990: 87(1-24), 1991: 88(1-24), 1992: 89(1-24), 1993: 90(1-24), 1994: 91(1-26), 1995: 92(1-26), 1996: 93(1-26), 1997: 94(1-26), 1998: 95(1-26), 1999: 96(1-26), 2000: 97(1-26), 2001: 98(1-26), 2002: 99(1-26), 2002/2003: 100(1-26), 2004: 101(1-9, 11-52), 2005: 102(1-19, 21-23, 25-52), 2006: 103(1-52), 2007: 104(1-52), 2008: 105(1-52), 2009: 106(1-52), 2009/2010: 107(1-52), 2010/2011: 108(1-52), 2011/2012: 109(1-52), 2012/2013: 110(1-52), 2014: 111(1-52), 2015: 112(1-52), 2016: 113(1-52), 2017: 114(1-52), 2018: 115(1-52), 2019: 116(1-52), 2020: 117(1-52), 2021: 118(1-42, 44-52), 2022: 119(0-52), 2023: 120(1-52), 2024: 121(1-43, 45-52), 2025: 122(1-22, 24, 26-37, 39-42)
Preserved

Proceedings of the National Academy of Sciences

Portico

1915

2025

20/11/2025

Archival Status
StatusPublisherKeeperFromToUpdatedExtent of archive
Preserved

National Academy of Sciences

CLOCKSS Archive

1915

2014

17/11/2025

1 to 109, 111
In Progress

National Academy of Sciences

CLOCKSS Archive

2013

2025

17/11/2025

110, 112 to 122
Preserved

National Academy of Sciences [etc.]

HathiTrust

1900

1929

01/09/2025

v.1 (1915); v.3 (1917); v.5 (1919); v.4 (1918); v.3 (1917); v.2 (1916); v.1:4 (1915); v.1:1 (1915); v.7 (1921); v.2 (1916); v.1 (1915); v.6 (1920); v.5 (1919); v.4 (1918); v.4 (1918); v.2 (1916); v.2 (1916); v.8 (1922); v.1 (1915); v.4 (1918); v.7 (1921); v.7 (1921); v.1 (1915); v.3 (1917); v.5 (1919); v.3 (1917); v.8 (1922); v.6 (1920); v.6 (1920); v.6-7 (1920-1921); v.5 (1919); v.2 (1916); v.8 (1922); v.5 (1919); v.2 (1916); v.3 (1917); v.6 (1920); v.7 (1921); v.8 (1922); v.3 (1917); v.1 (1915); v.4 (1918); v.2 (1916); v.4 (1918); v.7 (1921); v.5 (1919); v.5 (1919); v.4 (1918); v.6 (1920); v.1 (1915); v.3 (1917); v.1 (1915); v.8 (1922); v.1 (1915); v.5 (1919); v.2 (1916); v.3 (1917); v.7 (1921); v.4 (1918); V.1/10 1915/1925 Index; v.4-5 (1918-19); Index v.85; v.87 p.9073-10068 1900 index; v.1-10 1915-26 index; v.9 1923; v.10 1929; v.13 1927; v.15 1929; v.11 1925; v.14 1928; v.6 1920; v.5 1919; v.8 1922; v.3 1917; v.1 1915; v.4 1918; v.2 1916; v.7 1921; v.12 1926; v.5; v.10; v.11
Preserved

National Academy of Sciences [etc.], 1915-1979.

HathiTrust

1915

1929

01/09/2025

v.1 1915; v.2 1916; v.3 1917; v.4 1918; v.5 1919; v.6 1920; v.7 1921; v.8 1922; v.9 1923; v.10 1924; v.11 1925; v.12 1926; v.13 1927; v.14 1928; v.15 1929; v.10 1924; v.11 1925; v.13 1927; v.14 1928; v.15 1929; v.12 1926; v.6 1920; v.7 1921; v.8 1922; v.9 1923
Preserved

National Academy of Sciences

Internet Archive

1914

2014

08/08/2025

1 to 121
Preserved

National Academy of Sciences

LOCKSS Archive

1915

2024

17/11/2025

122
In Progress

National Academy of Sciences

LOCKSS Archive

2025

2025

17/11/2025

Preserved : 11 (Supplement_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 12 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 16 (Supplement_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 17 (suppl_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 18 (Supplement_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 19 (Supplement_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 111 (Supplement_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 112 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 113 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 114 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 115 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 116 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 117 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 118 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 119 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 121 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52)
Preserved

National Academy of Sciences

National Digital Preservation Program, China

2009

2024

23/07/2025

Preserved : 11 (Supplement_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49); 12 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 16 (Supplement_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 17 (suppl_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 18 (Supplement_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 19 (Supplement_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 111 (Supplement_1, 1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 112 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 113 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 114 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 115 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 116 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 117 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 118 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 119 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52); 121 (1 to 9, 11 to 19, 21 to 29, 31 to 39, 41 to 49, 51, 52)
Preserved

National Academy of Sciences

National Digital Preservation Program, China

2009

2024

23/10/2025

Preserved : 1915: 1(1-12), 1916: 2(1-12), 1917: 3(1-12), 1918: 4(1-12), 1919: 5(1-12), 1920: 6(1-12), 1921: 7(1-12), 1922: 8(1-12), 1923: 9(1-12), 1924: 10(1-12), 1925: 11(1-12), 1926: 12(1-12), 1927: 13(1-12), 1928: 14(1-12), 1929: 15(1-12), 1930: 16(1-12), 1931: 17(1-12), 1932: 18(1-12), 1933: 19(1-12), 1934: 20(1-12), 1935: 21(1-12), 1936: 22(1-12), 1937: 23(1-12), 1938: 24(1-12), 1939: 25(1-12), 1940: 26(1-12), 1941: 27(1-12), 1942: 28(1-12), 1943: 29(1-11), 1944: 30(1-12), 1945: 31(1-12), 1946: 32(1-12), 1947: 33(1-12), 1948: 34(1-12), 1949: 35(1-12), 1950: 36(1-12), 1951: 37(1-12), 1952: 38(1-12), 1953: 39(1-12), 1954: 40(1-12), 1955: 41(1-12), 1956: 42(1-12), 1957: 43(1-12), 1958: 44(1-12), 1959: 45(1-12), 1960: 46(1-12), 1961: 47(1-12), 1962: 48(1-12), 1963: 49(1-6), 1963: 50(1-6), 1964: 51(1-6), 1964: 52(1-6), 1965: 53(1-6), 1965: 54(1-6), 1966: 55(1-6), 1966: 56(1-6), 1967: 57(1-6), 1967: 58(1-6), 1968: 59(1-4), 1968: 60(1-4), 1968: 61(1-4), 1969: 62(1-4), 1969: 63(1-4), 1969: 64(1-4), 1970: 65(1-4), 1970: 66(1-4), 1970: 67(1-4), 1971: 68(1-12), 1972: 69(1-12), 1973: 70(1-12), 1974: 71(1-12), 1975: 72(1-12), 1976: 73(1-12), 1977: 74(1-12), 1978: 75(1-12), 1979: 76(1-12), 1980: 77(1-12), 1981: 78(1-12), 1982: 79(1-24), 1983: 80(1-24), 1984: 81(1-24), 1985: 82(1-24), 1986: 83(1-24), 1987: 84(1-24), 1988: 85(1-24), 1989: 86(1-24), 1990: 87(1-24), 1991: 88(1-24), 1992: 89(1-24), 1993: 90(1-24), 1994: 91(1-26), 1995: 92(1-26), 1996: 93(1-26), 1997: 94(1-26), 1998: 95(1-26), 1999: 96(1-26), 2000: 97(1-26), 2001: 98(1-26), 2002: 99(1-26), 2002/2003: 100(1-26), 2004: 101(1-9, 11-52), 2005: 102(1-19, 21-23, 25-52), 2006: 103(1-52), 2007: 104(1-52), 2008: 105(1-52), 2009: 106(1-52), 2009/2010: 107(1-52), 2010/2011: 108(1-52), 2011/2012: 109(1-52), 2012/2013: 110(1-52), 2014: 111(1-52), 2015: 112(1-52), 2016: 113(1-52), 2017: 114(1-52), 2018: 115(1-52), 2019: 116(1-52), 2020: 117(1-52), 2021: 118(1-42, 44-52), 2022: 119(0-52), 2023: 120(1-52), 2024: 121(1-43, 45-52), 2025: 122(1-22, 24, 26-37, 39-42)
Preserved

Proceedings of the National Academy of Sciences

Portico

1915

2025

20/11/2025

Record information

Last modification date: 22/10/2025

Type of record:Confirmed

ISSN Center responsible of the record:ISSN National Centre for the USA

For all potential issues concerning this bibliographic record (missing or wrong data etc.), please contact the ISSN National Centre mentioned above by clicking on the link.

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