During the 1930s, Arthur Nelson Field was New Zealand’s most prominent author of right-wing conspiracy theories. Field’s influence spread to Australia where his books, periodicals and private letters were important sources of information and affirmation for a host of individuals and groupings on Australia’s far right political fringe. In Australia, Field’s writings were valued as textbooks by a variety of groups and individuals from the extreme nationalists of the Guild of the Watchmen of Australia to the Sydney-based League of Truth, the Catholic Truth Society, the Melbourne-based British-Australian Racial Body, the Evangelical Publishing Agency of New South Wales and, most importantly, Australia’s Douglas Social Credit movement. Many Social Credit activists and authors made significant use of Field’s writings. The most notable of these was a young Eric Dudley Butler, later leader of the Australian League of Rights. This article draws on a variety of sources to throw new light on the hitherto largely unexplored internal life of Australia’s radical right during the 1930s and its trans-Tasman connections.