American Institute of Aeronautics and Astronautics - History of Flight
The American Institute of Aeronautics and Astronautics' fascinating account of the many contributions made to the evolution of flight, by curious and brave pioneers from all over the world, starting around 3500 BC:
http://www.flight100.org/history_intro.html

Black Voices.com - Black History
Black Voices.com chronicles some of the momentous events in African-American History in its Black History Month Timeline:
http://www.blackvoices.com/black_news/black_history_month/timeline

Boston Family History - Immigrant Boston
The Boston histories of some of the many ethnic groups that compose our city’s diverse community are detailed in timeline form, accessible through the “Immigrant Boston” page of Boston Family History’s web site:
http://www.bostonhistorycollaborative.org/BostonFamilyHistory/ancestors/index.html

Decades.com
Decades.com presents its vast world history content entirely in timeline format. Generate historical timelines by decade, topic, or enter specific search criteria to produce your own customized chronologies:
http://www.decades.com/Default.asp

Encyclopaedia Britannica - Women in American History
Encyclopædia Britannica tells the absorbing story of extraordinary Women in American History, from Early America to the present, in this valuable timeline:
http://search.eb.com/women/

Family Education Network
The Family Education Network puts a millennium of education into perspective in its timeline, spanning from the Dark Ages to the Information Age
http://www.familyeducation.com/article/0,1120,1-4359,00.html

Federal Reserve Bank of San Francisco - Great Economists and Their Times
This timeline from the Federal Reserve Bank of San Francisco's publication, Great Economists and Their Times, traces the development of the major schools of economic theory through the work of ten important economists who lived from the 1700s to the mid-1900s. Major historical events of each period are recounted to illustrate the social, political, and intellectual climate in which each of these famous economists lived:
http://www.frbsf.org/publications/education/unfrmd.great/greattimes.html

Founding Fathers - American Chronology
A chronology of America’s discovery, colonization, struggle for independence, and ensuing historic events (through World War II) is relayed in this comprehensive group of timelines on the Founding Fathers Home Page:
http://www.USAHistory.info/timeline

Mass.gov Interactive State House
Almost four centuries of key moments in Massachusetts education history are conveniently assembled in this thorough Interactive State House timeline
http://www.state.ma.us/statehouse/ed_timeline_text.htm

Radcliffe Quarterly - Consumption History
Radcliffe Quarterly's Fall 2001 issue titled "Buying into the Future" featured this great timeline on the history of consumption in the U.S. Find out when your favorite toy, junk food, gadget or appliance, and other creature comforts were introduced in the U.S. consumer market. Note: timeline runs along the bottom of the article, starting on page 3.
http://www.economicadventure.org/timeline/radq42001.pdf

Roy Davies' Chronology of Money
A Comparative Chronology of Money, based on the late Professor Glyn Davies’ book, A History of Money from Ancient Times to the Present Day, is an enthralling account of the evolution of currency in its social and political context, from its earliest forms (livestock and crops) to the introduction of the Euro:
http://www.ex.ac.uk/~RDavies/arian/amser/chrono18.html

Tim Dwyer Patent Timeline
Crafted by Dedham High School history teacher Tim Dwyer while participating in a summer 2003 program for teachers at the Federal Reserve Bank of Boston, this comprehensive timeline chronicles milestones in the history of patenting in the U.S., starting with the nation's first patent law in 1790. Subsequent patent legislation and many “landmark” inventions are highlighted in this thorough compilation.
Dwyer Timeline

FactMonster.com - Timeline Archive
Researchers young and old, check out this treasure trove of timelines on all kinds of topics, especially designed for kids (but fun for adults too!) on the lively and colorful, award-winning children’s site, FactMonster.com, from Information Please.
http://www.factmonster.com/spot/timelinearchive.html

FactMonster.com - Modern Fashion
This great Factmonster timeline of modern women's fashion spotlights some of the prominent designers who have influenced the way we look and launched the style trends (some of which still haunt us) to which we've fallen prey throughout the decades (1850s-1990s):
http://www.factmonster.com/spot/fashiontime1.html

Morris County Library - History of Food
The Morris County Library (NJ/USA) has created this entertaining and informative "Food Timeline" in response to frequent requests by parents and teachers for help researching food history and period recipes. All the ingredients are included here for a fun exploration of one of humanity's favorite subjects—everything edible:
http://www.foodtimeline.org

Radcliffe Quarterly - Consumption History
Radcliffe Quarterly's Fall 2001 issue titled "Buying into the Future" featured this great timeline on the history of consumption in the U.S. Find out when your favorite toy, junk food, gadget or appliance, and other creature comforts were introduced in the U.S. consumer market. Note: timeline runs along the bottom of the article, starting on page 3.
http://www.economicadventure.org/timeline/radq42001.pdf

About.com - Inventors
About.com's timelines of some of the major inventions and innovations that have brought most of us to today's relatively comfortable standard of living, from the 15th Century to the present:
http://inventors.about.com/library/inventors/bl1400s.htm

Computer History Museum
The Computer History Museum’s chronicle of computing from 1945 to 1990 describes just about every significant innovation in hardware and software technology since the dawn of the computer age:
http://www.computerhistory.org/timeline/

Crimsonbird.com
The Crimson Bird Book Shoppe's online book store provides this thorough yet succinctly written chronological summary of significant events, inventions, theories and discoveries in the history of science and technology, dating back to Ancient Egypt.
http://www.crimsonbird.com/science/timeline.htm

Hobbes' Internet Timeline
Self-proclaimed "Internet Evangelist" Robert H. Zakon compiled and maintains his frequently printed and cited Hobbes' Internet Timeline--ostensibly the "official" source on the history of the Internet:
http://www.zakon.org/robert/internet/timeline/

Innovation Odyssey
Innovation Odyssey's impressive list of New England milestones offers a nice “aerial” view of the region's extensive contributions to pioneering in a slew of categories, including Political and Religious Freedom; Education; Medicine and Public Health; and Recreation, Entertainment, and Culture:
http://www.innovationodyssey.com/breakthroughs.htm

PBS/WGBH - A Science Odyssey
A set of brief, fun timelines geared to kids that show the evolution of some of our most treasured everyday objects, such as the television, telephone and computer, can be found in the "Technology at Home" activity of the online version of PBS's 1998 TV series, A Science Odyssey:
http://www.pbs.org/wgbh/aso/tryit/tech/

PBS/WGBH - American Experience
From the film, "The Telephone" (part of WGBH's educational series, American Experience), comes this engaging timeline of American technological innovation (1752-1990), featured on the PBS web site as a complement to the online version of the program.
http://www.pbs.org/wgbh/amex/telephone/timeline/index.html

Tim Dwyer Patent Timeline
Crafted by Dedham High School history teacher Tim Dwyer while participating in a summer 2003 program for teachers at the Federal Reserve Bank of Boston, this comprehensive timeline chronicles milestones in the history of patenting in the U.S., starting with the nation's first patent law in 1790. Subsequent patent legislation and many “landmark” inventions are highlighted in this thorough compilation.
Dwyer Timeline

FactMonster.com - Modern Fashion
This great FactMonster timeline of modern women's fashion spotlights some of the prominent designers who have influenced the way we look and launched the style trends (some of which still haunt us) to which we've fallen prey throughout the decades (1850s-1990s)
http://www.factmonster.com/spot/fashiontime1.html

Illinois Labor History Society
The Illinois Labor History Society's "Curriculum of United States Labor History for Teachers" is not only a timeline of significant labor events in each of 11 developmental periods, starting with the Colonial, but also a great history resource that presents the major issues, concepts and ideas behind labor reform in the U.S. A wonderful reference tool for teachers and anyone researching the topic.
http://www.kentlaw.edu/ilhs/curricul.htm#1

University of Rochester - U.S. Suffrage Movement
Events of note in the U.S. Women's Suffrage Movement are outlined in this informative timeline from the Susan B. Anthony Center for Women's Leadership at the University of Rochester:
http://www.rochester.edu/SBA/suffragetimeline.html