http://uk.groups.yahoo.com/group/ordnancemaps/ Ordnance Survey maps. Tue, 11 Jun 2013 16:48:05 GMT Yolande Hodson http://uk.groups.yahoo.com/group/ordnancemaps/message/4719 http://uk.groups.yahoo.com/group/ordnancemaps/message/4719 I should have added that I have written quite a lot on the subject of road classification and their appearance on OS maps up to 1930ish in the Rights of Way Tue, 11 Jun 2013 16:07:20 GMT Yolande Hodson http://uk.groups.yahoo.com/group/ordnancemaps/message/4718 http://uk.groups.yahoo.com/group/ordnancemaps/message/4718 Any surface made up of broken stones, usually tamped down and sometimes filled with, for example, chalk, was regarded as 'metalled'. YH. ... From: Tue, 11 Jun 2013 16:00:26 GMT Hugh http://uk.groups.yahoo.com/group/ordnancemaps/message/4717 http://uk.groups.yahoo.com/group/ordnancemaps/message/4717 The key to the One-inch Revised New Series depicts roads thus Metalled Roads; First Class Fenced and Unfenced Metalled Roads; Second Class Fenced and Unfenced Mon, 10 Jun 2013 06:52:51 GMT Oliver, Richard http://uk.groups.yahoo.com/group/ordnancemaps/message/4716 http://uk.groups.yahoo.com/group/ordnancemaps/message/4716 Taking a quick look at R.N.E. Blake et al, Airfields of Lincolnshire since 1912 (1984), two TNA 'localities' to start searching out airfield plans are air 1, Sun, 09 Jun 2013 16:04:33 GMT John Hobden http://uk.groups.yahoo.com/group/ordnancemaps/message/4715 http://uk.groups.yahoo.com/group/ordnancemaps/message/4715 Thank you Richard and Anne for your responses. The reference to AIR files triggered a memory of the collection at Leicester University (see below) John, I Fri, 07 Jun 2013 16:31:36 GMT Anne Taylor http://uk.groups.yahoo.com/group/ordnancemaps/message/4714 http://uk.groups.yahoo.com/group/ordnancemaps/message/4714 Can confirm that we have nothing additional at Cambridge University Library Anne ... -- Anne Taylor Head of Map Department, Cambridge University Library, West Fri, 07 Jun 2013 13:17:08 GMT Anne Taylor http://uk.groups.yahoo.com/group/ordnancemaps/message/4713 http://uk.groups.yahoo.com/group/ordnancemaps/message/4713 Dear Colleagues As part of its 50th anniversary celebrations, the British Cartographic Society is organising a two day trip to the Black Country on 12th-13th Wed, 05 Jun 2013 16:56:34 GMT Gerry Zierler http://uk.groups.yahoo.com/group/ordnancemaps/message/4712 http://uk.groups.yahoo.com/group/ordnancemaps/message/4712 The London Map Fair is usually mostly antiquarian and worldwide stuff, but some dealers carry more modest items including London, though it'll be a tiny Wed, 05 Jun 2013 07:02:03 GMT Oliver, Richard http://uk.groups.yahoo.com/group/ordnancemaps/message/4711 http://uk.groups.yahoo.com/group/ordnancemaps/message/4711 'WD only' editions tend to be elusive! Have AIR files at the National Archives at Kew been tried? Perhaps a long shot... R.O. Wed, 05 Jun 2013 06:59:56 GMT Oliver, Richard http://uk.groups.yahoo.com/group/ordnancemaps/message/4710 http://uk.groups.yahoo.com/group/ordnancemaps/message/4710 I'm not aware that anyone has compared Cassini and TM acreages. A possible complication is that most of the 1:2500 National Grid mapping depended on Tue, 04 Jun 2013 22:02:09 GMT johnhobden http://uk.groups.yahoo.com/group/ordnancemaps/message/4709 http://uk.groups.yahoo.com/group/ordnancemaps/message/4709 Some of my colleagues are researching railway track layouts in Norfolk between 1919 and 1940. The specific subject is a siding east of Sedgeford village Tue, 04 Jun 2013 21:43:12 GMT John Hobden http://uk.groups.yahoo.com/group/ordnancemaps/message/4708 http://uk.groups.yahoo.com/group/ordnancemaps/message/4708 Thank you Richard - I thought I remembered being shown a sort of slide rule but wasn't certain - it was nearly 50 years ago! I wonder if anyone has looked at Tue, 04 Jun 2013 20:16:53 GMT Oliver, Richard http://uk.groups.yahoo.com/group/ordnancemaps/message/4707 http://uk.groups.yahoo.com/group/ordnancemaps/message/4707 No, I am not aware that there was any change in the method of calculating acreages, from the introduction of the 1:2500 in 1855 onwards. Indeed, it would seem Tue, 04 Jun 2013 16:35:46 GMT John Hobden http://uk.groups.yahoo.com/group/ordnancemaps/message/4706 http://uk.groups.yahoo.com/group/ordnancemaps/message/4706 I presume there was no change in the methods of measuring acreages during the period covered. I remember being shown the method of calculating acreages and Tue, 04 Jun 2013 15:24:50 GMT Oliver, Richard http://uk.groups.yahoo.com/group/ordnancemaps/message/4705 http://uk.groups.yahoo.com/group/ordnancemaps/message/4705 There was evidently a very small alteration in the boundary between the 1896 and 1912 editions, which was enough to increase the area of the field by about 2%