** The development of continuous series of tree rings going back thousands of years by using trees of overlapping age, is known as dendrochronology (see the Arizona Tree Ring lab web pages for more information on this). (realclimate.org)
The Biennial, an invitational show of work produced in the preceding two years, was introduced by Gertrude Vanderbilt Whitney in 1932, and it is the longest continuous series of exhibitions in the country to survey recent developments in American art. (artefuse.com)
Leslie's studio was the arena for a nearly continuous series of art happenings, performances, musical improvisations and parties. (allanstoneprojects.com)