Hitherto unpublished examples of the proposals submitted to the Lords of the Treasury in 1839 in competition for prizes offered in connection with the Penny Postage plan. (From the Author's Collection) 103 The address side of the model letter which has the stamp (shown below) affixed to the back as a seal.--Another of the unpublished essays submitted in the competition of 1839 for the Penny Postage plan. (From the Author's Collection) 107 A Postage Stamp "Chart"--one of the early forms of stamp-collecting 119 The small "experimental" plate from which impressions of the Two Pence, Great Britain, were made on "Dickinson" paper. Only two rows of four stamps were impressed on each piece of the paper. (_Cf._ next plate) 157 The Two Pence, Great Britain, on "Dickinson" paper. The upper block is in red (24 stamps printed in all, of which nine copies are known), and the lower block in blue (16 stamps printed, of which twelve copies are known). The above blocks of six each are in the possession of Mr. Lewis Evans; the pairs cut from the left side of each block were in the collection of the late Mrs. John Evans 161 One of the rough pencil sketches by W. Mulready, R.A., for the envelope. The "flying" figures are not shown in this sketch 165 Engraver's proof of the Queen's head die for the first adhesive postage stamps, with note in the handwriting of Edward Henry Corbould attributing the engraving to Frederick Heath 173 An exceptional block of twenty unused One Penny black stamps, lettered "V R" in the upper corners for official use. (From the collection of the late Sir William Avery, Bart.) 177 An envelope bearing the rare stamp issued in 1846 by the Postmaster of Millbury, Massachusetts.--One of the stamps issued by the Postmaster of Baton Rouge, Louisiana, during the Civil War, 1861 181 Another of the Confederate States rarities issued by the Postmaster of Goliad, Texas.--The stamp issued by the Postmaster of Livingston, Alabama. (From the "Avery" Collection) 183 The One Penny "Post Office" Mauritius on the original letter-cover. (From the "Duveen" Collection) 187 A roughly printed card showing the designs and colours for the Unified "Postage and Revenue" stamps of Great Britain, 1884 191 The King's copy of the Two Pence "Post Office" Mauritius stamp.--The magnificent unused copies of the One Penny and Two Pence "Post Office" Mauritius stamps acquired by Henry J. Duveen, Esq., out of the collection formed by the late Sir William Avery, Bart. 225