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On all A–Z maps, there is a three or four letter code in one of the corners, often the one containing the key. These letters represent numbers, which are the cartographic date, in the form (M)MYY. There was at least one scheme used, and perhaps a second.
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In one scheme, the letters JIHGFEDCBA represent the digits 1 to 9 and 0, so that HFD would be 357, indicating a publication date of March 1957. This seems to have been used on all the company's folding maps, and possibly also those in book form.
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when the protagonist is attempting to decipher a book code used by an international smuggling ring based on a book "everybody owns". After attempting to decipher the code using a
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so that they can tell if a map has been illegally copied from theirs, a technique used by several publishers of reference works (see
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did not include a publication date. It is possible to determine a date range for publication due to the following:
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and appropriates a copy of the A–Z after seeing it being used by a couple of tourists.
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TV programme. This revealed that, on all their maps, A–Z print a non-existent
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The story of
Pearsall's development of the A–Z also inspired the musical
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147:(pronounced "Ay to Zed"), is a title given to any one of a range of
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322:", the second episode of the first series of the BBC drama
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Phyllis
Pearsall: founder of Geographers' A–Z Map Company
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was the official supplier of atlases and maps for the
359:and produced detailed maps for the Olympic Park in
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224:from 1962 to 1992, the "Published By" address was
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191:Until relatively recently, maps produced by the
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244:in 1972, the company name was changed from
209:until 1962, the "Published By" address was
163:, was originally compiled in the 1930s by
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284:came to write the first edition covering
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202:the only maps produced by them during
199:their first map was published in 1936;
22:London Geographers' A–Z Street Atlas
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318:The London A–Z is a plot device in "
206:(1939–1945) were war maps of Europe;
171:of many cities and towns in the UK.
157:Geographers' A–Z Map Company Limited
288:were featured in a 2005 episode of
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57:Geographers' A–Z Map Company Ltd.
476:Publications established in 1936
491:1936 establishments in England
193:Geographers' (A–Z) Map Company
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278:Geographers' A–Z Street Atlas
138:Geographers' A–Z Street Atlas
392:Geographers' A–Z Map Company
349:Geographers' A–Z Map Company
251:Geographers' A–Z Map Company
39:Geographers' A–Z Map Company
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481:Maps of the United Kingdom
336:, Sherlock goes out into
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246:Geographers' Map Company
141:, commonly shortened to
437:5 December 2006 at the
185:Authentic Map of London
418:1 January 2007 at the
373:2012 Cultural Olympiad
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159:. Its first atlas, of
357:2012 Paralympic Games
280:and the story of how
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449:4 March 2016 at the
367:and throughout the
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353:2012 Olympic Games
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151:of streets in the
456:Key company dates
183:The cover of the
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114:978-1-84348-328-1
102:(seventh edition)
75:Publication place
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406:Official website
386:The A–Z of Mrs P
320:The Blind Banker
312:The A–Z of Mrs P
304:fictitious entry
282:Phyllis Pearsall
272:Media appearance
165:Phyllis Pearsall
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63:Publication date
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300:trap street
169:street maps
465:Categories
330:dictionary
259:Coded date
48:Street map
361:Stratford
227:Sevenoaks
90:Paperback
54:Publisher
447:Archived
435:Archived
416:Archived
379:See also
332:and the
325:Sherlock
219:, London
128:80760632
471:Atlases
426:Sources
295:Map Man
217:Holborn
187:of 1957
149:atlases
100:430 pp
88:Print (
44:Subject
365:London
286:London
239:, Kent
229:, Kent
161:London
36:Author
334:Bible
97:Pages
67:1936
355:and
276:The
135:The
122:OCLC
109:ISBN
306:).
292:'s
248:to
211:28
144:A–Z
467::
315:.
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254:.
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92:)
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