a digital library of Unitarian Universalist biographies, history, books, and media
the digital library of Unitarian Universalism
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About Harvard Square Library

The Harvard Square Library was founded in 2000 by the Rev. Dr. Herbert F. Vetter as a retirement activity. He saw the potential of the Internet to make books and other scholarly materials available for free to anyone, anywhere in the world.  For the past decade, Harvard Square Library has celebrated Unitarian Universalism and liberal religion by making biographies, history, books, and media of historical and contemporary interest available for free to a worldwide Internet audience. In 2008, Harvard Square Library was incorporated under the laws of Massachusetts as a non-profit tax exempt 501(c)3 organization.

HSL is an affiliated organization in relationship with the First Parish in Cambridge, Unitarian Universalist. Members of First Parish serve on HSL’s Board of Directors. These include James Vetter (President), Jane Sturtevant (Treasurer), Michael Melford, James Vetter, and Conrad E. Wright.

The Director of Harvard Square library is the UU historian the Rev. Dr. Susan Ritchie.

HSL’s Mission and Vision


Harvard Square Library is a digital library that features biographies, books, historical documents, and other materials about Unitarian Universalism and religious liberalism. We provide these materials free of charge to an audience of Unitarian Universalist congregations, ministers, members, and friends, as well as theological students, scholarly researchers, and other site visitors from around the world.


Our collection includes biographies of notable Unitarian Universalists and other individuals relevant to the liberal religious tradition, as well as texts illustrating historic and contemporary Unitarian Universalist perspectives on:

  • Denominational history and identity
  • Worship and ritual arts
  • Religious education
  • Women and religion
  • Religion, culture, and society
  • Theology and philosophy
  • History of Cambridge and Harvard University

Harvard Square Library seeks to present materials in usable formats for edification, research, and enjoyment.

Approved by the Board of Harvard Square Library, May, 2013

Notable in UU History
Julia Ward Howe

Notable American Unitarians: Social Change – Julia Ward Howe

Julia Ward Howe, 1819-1910 Julia Ward Howe, born in New York City, was the daughter of ... Read More
Aurelia Henry Reinhardt

Aurelia Henry Reinhardt: Mills College President, 1877-1948

by Clare B. Fischer Aurelia Henry Reinhardt Professor of Religion and Culture, Starr King School for ... Read More
Archbishop St. Anselm

Charles Hartshorne: The Chicago Years, Part 2

By Donald Wayne Viney The Logic of Theism After 1934 Hartshorne returned to metaphysics and philosophical ... Read More
Merle Goldman

Merle Goldman

Merle Goldman, Professor Emerita of History at Boston University, was born in March 12, 1931. She ... Read More