Unitarian Universalist Historical Society 
Links for Unitarian Universalist history.
http://www.uua.org/uuhs/Professor Brought Christmas Tree to New England 
From the Harvard Gazette, an article on Unitarian minister and abolitionist Charles Follen, and the story of how he promoted the Christmas tree.
http://www.news.harvard.edu/gazette/1996/12.12/ProfessorBrough.html
Unitarian Universalists in Science Fiction 
Annotated list of science fiction novels and stories with UU characters or references. Also, UU authors of science fiction.
http://www.adherents.com/lit/sf_uu.html
Universalism on the Pacific Coast 
Articles include history of individual churches, including ones that no longer exist.
http://www.lafn.org/~dave/uu/universalism
Socinianism 
Catholic Encyclopedia article on this body of doctrine held by one of the Antitrinitarian sects that gave rise to Unitarianism.
http://www.newadvent.org/cathen/14113a.htm
Unitarian Universalist Origins 
History of the Unitarian Universalist religion by Mark W. Harris, former director of public information for the UUA.
http://www.uua.org/info/origins.html
Reflections of Public Ministry at Harvard Divinity School 
An online exhibit.
http://www.hds.harvard.edu/library/exhibits/online/hdspublicministry/
Unitarian History 
An article written by Ken Morrison of the Lakehead Unitarian Fellowship, Thunder Bay, Ontario, Canada.
http://www.luf.ca/uuhist.htm
Dictionary of Unitarian and Universalist Biography 
Online biographies commissioned by the Unitarian Universalist Historical Society.
http://www.uua.org/uuhs/duub/
The Unitarian Universalist Tradition: A Basic Research and Reading List 
Annotated list of print and Internet resources, prepared for the Harvard Divinity School community by Andover-Harvard Theological Library.
http://www.hds.harvard.edu/library/research/guides/uu/index.html
Postcards of Unitarian and Universalist Church Buildings 
Searchable database of digitized images of nineteenth- and twentieth-century postcards picturing Unitarian and Universalist church buildings.
http://www.hds.harvard.edu/library/collections/digital/postcards.html