The National Vigilance Association (NVA) was a British society established in 1885. Its goal was to combat prostitution, particularly forced prostitution by children. It has been described as the main social purity organization in the United Kingdom. (From Wikipedia)
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National Vigilance Association (Great Britain): Pernicious Literature: Debate in the House of Commons; Trial and Conviction for Sale of Zola's novels; With Opinions of the Press (London: National Vigilance Assoc., 1889) (page images at HathiTrust)
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National Vigilance Association (Great Britain): A manual of vigilance law (National Vigilance Association and International Bureau for the Suppression of Traffic in Women and Children, 1923), also by Wyndham Anstis Bewes, G. Thompson, and International Bureau for the Suppression of Traffic in Women and Children (page images at HathiTrust; US access only)- National Vigilance Association (Great Britain): The white slave trade. Transactions of the International Congress on the white slave trade, held in London on the 21st, 22nd and 23rd of June, 1899, at the invitatiion of the National Vigilance Association. ([Wertheimer, Lea and Co.], 1899), also by International Congress for the Suppression of Traffic in Women and Children (1st : 1899 : London) and National Vigilance Association (page images at HathiTrust)
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