Another #MapMonday sees another huge batch of Ordnance Survey GB 1:25,000 mapping added to SABRE Maps - this time it's 463 individual #map sheets dating from 1949; and it includes our first revised sheets in the series for you to play "spot the difference" with. buff.ly/3PxBmu7

Enjoying our Ordnance Survey GB 1:25k First Series releases so far? We hope so, because this #MapMonday brings another 451 individual #map sheets to SABRE Maps, freely available on our website for all to enjoy. buff.ly/kjxNxGd

Back in the olden days you had to keep buying new maps to find out what your town was called this year.

Lots of people seemed to really enjoy last week's #MapMonday addition to SABRE Maps of 158 newly georeferenced 1:25k maps from 1945-6. How to top that? Maybe adding another 339 map sheets from 1947? Freely available to everyone, though we never say no to donations! buff.ly/RkSn0mk

You may have noticed we've been pretty quiet recently - we've been working hard. What have we been up to? Preparing 1:25,000 historic #maps to be added to our already enormous mapping collection, and the first batch of 158 maps has been released pn #MapMonday from 1945-6. Enjoy! buff.ly/l2uXTy6

This #MapMonday, let's take another look at part of SABRE Maps. Today is one of our favourites - Map Fader. Pick a layer that you want to look at, click the "Map Fader" button, and pick a second layer, and compare the two! It works with any #map layers we have, so you can easily see any changes!

Aug 1979: 1:50 000 Maps ad from Ordnance Survey «Is there life beyond the motorways?»

And you can see where the flyover was meant to go on our Ringways map, the most accurate (and indeed only) map of London's unrealised motorway plans of the era. www.sabre-roads.org.uk/maps/index.p...

Another part of SABRE Maps that you might not have used or forgotten about is our Sheetfinder - pick your scale, click on the location and the #maps covering that location at that scale appear in the right hand area. Click on the thumbnail, and it takes you to the map. Easy! buff.ly/f7tZpdc

This #MapMonday we'll leave a reminder of one of the other applications in the SABRE Maps family - the Co-ordinate Finder. Mouse over the map of GB or IRL, and get the location of that point in lots of modern and archaic co-ordinate formats. Perfect for map nerds like us! buff.ly/JraIUl8

This #MapMonday sees a few more Ordnance Survey Ireland Half Inch #maps from 1971 added to SABRE Maps, with one of my favourite physical sheets. Yes, the physical map really does look like that, with the red printing layer completely misaligned to the rest of the map. buff.ly/Vx7jBc7

Another #MapMonday means more #maps on SABRE Maps! This week we bring 8 Half Inch maps from 1970-72. Our favourite in this batch are the western half of the OSNI Half Inch Second Series from 1970, which includes all of County Donegal as well as the western half of NI. buff.ly/0iOZSxr

I've had reason to open out some of my Ordnance Survey "Old Series" one-inch maps today so here's the first edition 1813 section of Sussex covering Bexhill. @bexhillmuseum.bsky.social

#MapMonday sees more #maps added to SABRE Maps, with three more Half Inch sheets added to our 1968 layer. A few weeks ago we complained about the 1961 Snowdon sheet not being ready for Number Six, well, he was there in 1968, and so is The Village! #ThePrisoner buff.ly/1rC4ClC

Another #MapMonday, another set of #maps added to SABRE Maps. This week's additions are 10 Half Inch maps from 1966 and 1967, mostly covering Ireland, but there's one Welsh sheet in the batch as well for you all to enjoy, completely freely. buff.ly/Wl7J8b5

It's been a really busy week for us this week, so there's just a single layer been added to SABRE Maps this #MapMonday- half a dozen Half Inch #maps from 1965 covering quite a large part of Ireland. We hope you're enjoying them! buff.ly/OHuqI0E

More OS, OSI and OSNI #maps at the Half Inch scale this week have been added to SABRE Maps, with 15 maps for you to enjoy. Disappointingly, the 1961 map of Snowdonia doesn't appear to consider The Village at Portmerion, soon to welcome Number Six, to be important enough to label. #ThePrisoner

#MapMonday rolls around again, and it's going to be a hot one! So, let's give you some more Ordnance Survey Half Inch #maps from 1958-60, with a set containing both GB and IRL sheets. There's two editions of the Birmingham Half Inch sheet, so what differences can you find? buff.ly/70vRsYG

In this #MapMonday SABRE Maps update, we're bringing more Ordnance Survey Half Inch #maps to life, with sheets published in 1955, 1956 and 1957 across Ireland, adding yet more editions to our already large collection of mapping across the island. buff.ly/t29jfAo

SABRE Maps has the largest collection anywhere of modern Ordnance Survey GB 1:250k #OpenData #maps, all freely available for people to see. And now on #MapMonday the brand new 2026 edition is here for you to enjoy! Try our Map Fader and see what changes from 2025 you can find buff.ly/KY5kHm6

It's World Bicycle Day today, here are two Ordnance Survey map covers from between the wars by OS in-house artist Ellis Martin (more examples of his work below). More free time after WWI led to an increase in walking and cycling maps, often with covers as attractive as these @bodleian.ox.ac.uk

This #MapMonday, we're having a small pause from the Half Inch journey, whilst we realise that in January we completely missed two 1975 Quarter Inch OSI #maps for the southern part of #Ireland. So, we'll go a long way to make it up... buff.ly/4SHJ4vc

Phew! What a scorcher! And what more could we ask to enjoy the warm weather this #MapMonday than to spend some of it in front of some newly uploaded Half Inch #maps of Ireland on SABRE Maps, from between 1948 and 1952. buff.ly/36FVAf4

A challenge for everyone this #MapMonday! We've added four Half Inch #maps from 1945 and 1946; and two of them are two different revisions of the Ordnance Survey Half Inch District sheet of Greater London, as well as two sheets covering parts of Ireland.

New on SABRE Maps this #MapMonday? Half Inch #maps from 1939 - covering parts of all of the nations of our islands. Once again, it's amazing how much change there has been since these map was published - the Falls Road really isn't on the edge of Belfast any more for example! buff.ly/Uch0OEX

As a reminder, we have every single edition of every single OS One Inch Seventh Series available to view on SABRE Maps! ...except that one pesky sheet of Doncaster (Revision A/) which we cannot find anywhere, so if anyone has one, or know anywhere that has one, please let us know!

Archives & Collections, Library of Birmingham@theironroom.bsky.social · 6mo ago

May is #LocalHistoryMonth www.history.org.uk/historian/re... Maps are wonderful for exploring the history of your area. As well as flat maps, we have an extensive collection of folded maps such as this 7th Edition one inch map of Birmingham #LibraryofBham @histassoc.bsky.social

Five more new #maps have been made available on SABRE Maps this #MapMonday at the Half Inch scale from 1936-37. Our favourite is definitely the Peak District district map, featuring those well-known Peak District places like Liverpool, Manchester, Nottingham and North Florida... buff.ly/F4gISgn

Just the one additional sheet to highlight on SABRE Maps this #MapMonday - the 1935 Ordnance Survey Half Inch #Map of Greater London. Taking in a lot more than the modern definition of Greater London, it includes lots of places that look very, very different today... buff.ly/YvH8yy9

Three more Ordnance Survey #map sheets have been added to SABRE Maps for #MapMonday, at the Half Inch scale showing the English Midlands in 1934. The Birmingham District Yard Grid sheet shows just how much the West Midlands conurbation has merged together over the last 90 years! buff.ly/50ZNiZO

Our next stop in our journey through the Ordnance Survey Half Inch #maps of Great Britain and Ireland on this #MapMonday is to 1932. Here, we've added three new maps, and they illustrate just how much of a mess OS Half Inch mapping was!