UK Ordnance Survey maps contain a vast wealth of information, showing position and place names for cities, towns, villages, hamlets, farms and even individual houses. Their "getamap" page provides online access to sections of their current Landranger (1:50,000) and Pathfiner (1:25,000) maps. The northern isles are covered in the Landranger 5 map, Mainland in Landranger 6, and the southern isles in Landranger 7. They are an invaluable aid for serious Orkney genealogists.
Caledonian Books has reprinted four Ordnance Survey maps of Orkney, dating from about 1890. These are available from Caledonian Books, Collieston, Ellon, Aberdeenshire, AB41 8RT, Scotland. Ask for sheets 117-120.
For an online gazetteer and the 1882 edition of Ordnance Survey see the Old Maps website.
For online copies of older maps of Orkney see the National Library of Scotland map images.
The online History of Orkney Maps by John K Chesters includes details of forty maps of Orkney dating from 1573 to 1883.
James Irvine's book The Orkneys and Schetland in Blaeu's Atlas Novus, 1654 looks at the fifth volume of Joanne Blaeu's Atlas Novus, the first comprehensive atlas of Scotland. Published in 1654, it contains the well-known map of Orkney and Shetland by Timothy Pont that includes more place-names than any subsequent map until the Ordnance Survey of the 19th century. This volume reproduces the map and the translated descriptions of Orkney and Shetland with editorial footnotes. The book (with colour illustrations and laminated case board cover) may be obtained direct from the editor at 11 Agates Lane, Ashtead, Surrey KT21 2NG. Cost: £14.95 + postage.