1.  1879. De La Rue Essays. The four head dies showing variations. The bottom right was selected for the issued stamps. National Postal Museum, R M Phillips Collection Vol. XXXVII P.35.

2.  1880. Artist's Drawing 12d. A slightly enlarged version of the artist's original drawing which was stamp size. National Postal Museum, R M Phillips Collection Vol. XXXVII P.44.

3.  Thomas Jeffrey's Scheme 1881. Colour essays printed by De La Rue, Jeffrey, Controller of the London Postal Service, was to become Chairman of the 1884 Stamp Committee. National Postal Museum, R M Phillips Collection Vol. XXXVIII P.3.

4.  W Adams's Scheme 1884. Postage stamps with a different shape for each value but similarly coloured. Adams was a Clerk in the Controller of Stamps Office. Only part of the scheme is shown. A reduction from the original in the National Postal Museum, R M Phillips Collection Vol. XXXIX P.17.

5.  W Adams's Scheme 1884. Postage stamps with a different shape for each value but similarly coloured. Adams was a Clerk in the Controller of Stamps Office. Only part of the scheme is shown. A reduction from the original in the National Postal Museum, R M Phillips Collection Vol. XXXIX P.17.

6.  High Values 1883-1884 De La Rue printing.  A reduction from the originals in the National Postal Museum RM Phillips Collection Vol. XXXIX P.32.