Illustrated London News, 27 March 1880, p. 2002.
C. Vosmaer and L. Alma-Tadema, Alma-Tadema Catalogue Raisonée, unpublished manuscript, Leiden, circa 1885 (no. 33 as 'La Lecture' and no. 325 as 'Vespasian hearing from one of his generals').
Exhibition catalogue, Art Association of Montreal: Loan Exhibition, Montreal, 1895, p. 5.
'With brush and pencil', Montreal Herald, 22 November 1895.
Montreal Daily Witness, 26 November 1895, illustrated.
R. Dircks, 'The later works of Lawrence Alma-Tadema', Art Journal, December 1910.
V. Swanson, The Biography and Catalogue Raisonée of the Paintings of Sir Lawrence Alma-Tadema, London, 1990, p. 138, no. 302, illustrated.
Paris, Exposition Universelle, July 1867, no. 9.
London, Messrs Arthur Tooth & Sons, 1880 (on loan).
London, Grosvenor Gallery, Winter Exhibition, 1882-3, no. 249 (as 'The Dispatch').
Amsterdam, Brakke Gand, 1893.
Montreal, Art Association of Montreal: Loan Exhibition, 19 November - 7 December 1895, no. 1.