English children, as painted by Sir Joshua Reynolds : an essay on some of the characteristics of Reynolds as a painter, with especial reference to his portraiture of children (1867)
Stephens, Frederic George, 1828-1907 · London : Seeley, Jackson, and Halliday, 54 Fleet Street · leaf 101
A GIPSY BOY.
Reynolds, Joshua, Sir, 1723-1792 · Children -- Great Britain -- Portraits · Children in art
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.