The Life of John Metcalf, Commonly Called Blind Jack of Knaresborough (York: E. & R. Peck, 1795) · John Metcalf (dictated) · York: E. & R. Peck, 1795; Project Gutenberg ebook #69595
"John Metcalf was born at Knaresborough, on the 15th of August, 1717. When four years old, he was put to school by his parents, who were working people, and continued at school two years: He was then seized with the small-pox, which rendered him totally blind." … "His father keeping horses, he learned to ride." … "His parents having other children, at the age of thirteen had John taught music."