Snare, J. (1848). Proofs of the authenticity of the portrait of Prince Charles (afterwards Charles the First), painted at Madrid in 1623, by Velasquez, contained in observations on the remarks of Sir Edmund Head, Bart. and William Stirling, Esq. M.A. London: Whittaker.

Snare, John. Proofs of the Authenticity of the Portrait of Prince Charles (afterwards Charles the First), Painted At Madrid in 1623, By Velasquez, Contained in Observations On the Remarks of Sir Edmund Head, Bart. and William Stirling, Esq. M.A. London: Whittaker, 1848.

Snare, John. Proofs of the Authenticity of the Portrait of Prince Charles (afterwards Charles the First), Painted At Madrid in 1623, By Velasquez, Contained in Observations On the Remarks of Sir Edmund Head, Bart. and William Stirling, Esq. M.A. London: Whittaker, 1848.