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Issues of the Catalog — concerned with "access to tools" — were put together by Brand, his wife, friends and associates. They were published regularly until 1972, and sporadically until 1998. The Catalog embraced many sorts of things as useful "tools": books, maps, garden and carpentry tools, specialized clothing, forestry gear, tents, welding equipment, professional journals, early synthesizers and personal computers. Brand invited "reviews" of the best of these items from experts in specific fields. The articles also told where the reviewed items could be located or bought. The Catalog's publication coincided with the great wave of experimentalism, convention-breaking, and "do it yourself" attitude associated with the "counterculture."