Post Office Telegraphs - diagrams of Telegraph Apparatus and Connections - G.P.O. 1881 Jun. [Chiefly comprises lithograph diagrams (44 leaves) with ms. diagrams and tipped-in ms. and copy diagrams added (18 leaves). The volume is MS 2052/1; /2 to /7 (11 items) are letters and other diagrams, all loose leaves found within the volume. It was sent by the GPO to James Graves, superintendent of the Anglo-American Telegraph Company at Valentia Island, co. Kerry, Ireland from 1865 to 1910. The tipped-in and loose items date from 1880 to 1902]