James Boswell, Samuel Johnson (1786). “Boswell's Life of Johnson: including Boswell's Journal of a tour of the Hebrides, and Johnson's diary of A journey into North Wales”, p.264
Joseph Lancaster (1807). “Improvements in Education, as it Respects the Industrious Classes of the Community: Containing Among Other Important Particulars, an Account of the Institution for the Education of One Thousand Poor Children, Borough Road, Southwark; and of the New System of Education on which it is Conducted”, p.151