1966

• Dr. Richard H. Lineback recognized the need for an index of philosophy journals; he founded and became the editor of The Philosopher’s Index.

1967

• Dr. Lineback founded the Philosopher’s Information Center, which owns and publishes The Philosopher’s Index.
• The first issue of The Philosopher’s Index was published.

1969

• Abstracts were added to The Philosopher’s Index.

1970

• Dr. Lineback founded the Philosophy Documentation Center and served as its director for 25 years; during his tenure, the Philosophy Documentation Center published The Philosopher’s Index.

1976

• Funding for a retrospective project was received from the National Endowment for the Humanities to expand coverage of The Philosopher’s Index to include U.S. journals from 1940-1967 and books from 1940.

1978

• The Philosopher’s Index: A Retrospective Index to U.S. Publications from 1940 was published.
• Funding for a retrospective project was received from the National Endowment for the Humanities to expand coverage of The Philosopher’s Index to include Non-U.S. journals from 1940-1967 and books from 1940.

1979

• The Philosopher’s Index was made available online with DIALOG.

1980

• The Philosopher’s Index: A Retrospective Index to Non-U.S. English Language Publications from 1940 was published.

1990

• The Philosopher’s Index was made available on CD-ROM and online by OVID (formerly SilverPlatter).

2004

•  The Philosopher’s Index was made available from CSA (now ProQuest) and OCLC.

2007

•  The Philosopher’s Index was made available from EBSCO.

2014

•  The print edition of The Philosopher’s Index was discontinued after 47 years of publication.

2015

• The Philosopher’s Index partnered with EBSCO to create a new, full-text product, The Philosopher’s Index with Full Text.

2017

• The Philosopher’s Information Center and The Philosopher’s Index celebrate their 50^th Anniversary!