The most notable Christadelphian attempts to find a continuity of those with doctrinal similarities since that point have been geographer Alan Eyre's two books "The Protesters" (1975) and "Brethren in Christ" (1982) in which he shows that many individual Christadelphian doctrines had been previously believed. Eyre focused in particular on the Radical Reformation, and also among the Socinians and other early Unitarians and the English Dissenters. In this way, Eyre was able to demonstrate substantial historical precedents for individual Christadelphian teachings and practices, and believed that the Christadelphian community was the 'inheritor of a noble tradition, by which elements of the Truth were from century to century hammered out on the anvil of controversy, affliction and even anguish'. Although noting in the introduction to 'The Protestors' that 'Some recorded herein perhaps did not have "all the truth" — so the writer has been reminded', Eyre nevertheless claimed that the purpose of the work was to 'tell how a number of little-known individuals, groups and religious communities strove to preserve or revive the original Christianity of apostolic times', and that 'In faith and outlook they were far closer to the early springing shoots of first-century Christianity and the penetrating spiritual challenge of Jesus himself than much that has passed for the religion of the Nazarene in the last nineteen centuries'.