[4] Van Praagh's "Pure Oral System" attracted the attention of Anne Thackeray[8] and other members of the press.

[6][10] In 1870, van Praagh became director of the Association for the Oral Instruction of the Deaf and Dumb, a nonsectarian institution founded by Juliana Baroness Mayer de Rothschild.

[9] Van Praagh also founded the National Union of Teachers upon the Pure Oral Method shortly after the passing of the Elementary Education (Blind and Deaf Children) Act in 1893.

[2] Van Praagh died on 28 June 1907 following a sudden attack of angina pectoris after his annual public demonstration of the lip-reading system in Fitzroy Square.

[1] Van Praagh was a member of the Committee of the Netherlands Benevolent Society, and a Past Master of the Athenaeum Lodge no.

[12] In recognition of his contributions to the education of the deaf, van Praagh was named an Officier d'Académie by the French Ministry of Public Instruction and Fine Arts in 1884.