The American Quaternary Association - Professional organization of North American scientists devoted to studying all aspects of the Quaternary Period, about the last 2 million years of Earth history.INQUA - International Union for Quaternary Research - Devoted to the Study of the Quaternary Period in Earth History
Quaternary Research Association - Organization comprising archaeologists, botanists, civil engineers, geographers, geologists, soil scientists, zoologists and others interested in the Quaternary. Most members are in Great Britain, but membership also extends to most European countries, North America, Africa and Australasia.
Canadian Quaternary Association (CANQUA) - A group devoted to the study of the Quaternary period. Site has organization information and links to related sites.
Australasian Quaternary Association - Primary focus is Quaternary research in Australia and New Zealand.
International Permafrost Association - Focus on scientific investigation and engineering work on permafrost. On-line access to recent issues of the journal "Frozen Ground."
Friends of the Pleistocene - Coordinates field trips to sites of Pleistocene interest throughout North America.
