File:Joachim-Richter-Piatti-Dannreuther.jpg

Summary
Clockwise from top left:
 * Joseph Joachim, printed in and scanned from The Musical Times, Vol. 48, No. 775 (September 1907), pp. 577–583
 * Hans Richter by Herbert Rose Barraud, published by Richard Bentley & Son, 1888. Printed in and scanned from Jacobs, Arthur (1994). Henry J. Wood: Maker of the Proms. London: Methuen. ISBN 0413693406, unnumbered photograph pages between pp. 100 and 101.
 * Alfredo Piatti. Copied from Cellist Database, Alfredo Piatti. Original by W. & D. Downey, published by Cassell & Company, Ltd, 1890 (see details at National Portrait Gallery site).
 * Edward Dannreuther, printed in and scanned from The Musical Times and Singing Class Circular, Vol. 39, No. 668 (October 1898), pp. 645–654