By request, here's a thread of books that I think make excellent gifts this holiday season (obviously they're cartographically inclined, you know me) 1. Best anthology "All Over the Map" by Betsy Mason and Greg Miller A gorgeous, full color history of maps mind-bending maps from around the world.

Our database will be in read-only mode for a planned upgrade next Monday, November 24, at 19:00 UTC. We expect the upgrade to take about 3 hours. During that time, you won’t be able to save any changes, but you’ll be able to view and query the map as usual. Thank you for your patience.

It was a privilege to introduce the software #internationalization and #localization community to #OpenHistoricalMap (and #OpenStreetMap and @maplibre.org) at #UTW2025. Join us in mapping yesterday already! #i18n #l10n

In October, the #OpenHistoricalMap community added 87,784 dated elements, 28,666 buildings, and 15,202½ railroad miles. The average age of a dated element fell by 15 months, and the average year shifted one year later. All this with the help of 40 new contributors – welcome! osm.wiki/OHM/Statistics

Anyone mapping the history of the German Autobahn? We have a particularly fleißig mapper who has set up a project for the daunting task of mapping the historical evolution of die Bundesautobahn & he's off to a great start... #HGIS #OpenStreetMap #OpenHistoricalMap #DH #Germany #Highways #History

The breakage from last week is now fixed. You can once again use the map in any language and preview tagged images and Wikipedia articles in the sidebar. Please let us know if you continue to see any issues.

Secret Maps opens today! 🤫 🗺️ From medieval manuscripts to Cold War espionage, our new exhibition explores how maps have hidden as much as they revealed for over 600 years. Book now: bit.ly/BLSecretMaps

Any Australian OHM mappers out there? This seems like a great complement to our efforts that might benefit from an improved 1970s Melbourne basemap! #Australia #DH #PastMapping #OpenStreetMap #Melbourne

We’re aware that the map on our homepage is currently nonfunctional in some languages. If you are seeing this issue, please switch the interface to English for now. Thank you for your patience. forum.openhistoricalmap.org/t/broken-hom...

The Irish Railway System between 1920 and 2020, name a bigger downgrade in history. Why it happened: brilliantmaps.com/irish-rai...

Just because the AWS block is a lot bigger and sturdier doesn't mean it's not also a single point of failure

Had a great time presenting about how OHM & Wikimedia can be used together at #WikiconferenceNA. The focus of my talk was on how OHM data's tagging can include to add source information not just for geometry, but also for attributes, and that all of this is easily downloadable for reuse. #DH /1

The second day of Wikiconference North America 2025 kicks off today with an enlightening and highly entertaining talk with longtime Wikipedia champion @craignewmark.bsky.social and @depthsofwikipedia.bsky.social. Follow along as we post updates today! #wikiconferenceNA

If you’re in #Loouhvull for #NACIS #NACIS2025, look out for these OpenHistoricalMap stickers. Snag one and keep it real! (For the record, we have a scale bar too.)

We've set up some new networking rules on our sites, so if you're seeing any 503 or other errors, please DM and we'll fix things up! #NotYouBots

Nicely done! Here's the tutorial 👉 youtu.be/JfDW8P51MmA

In September, the #OpenHistoricalMap community added 78,430 dated elements, 10,580 buildings, and 20,439¼ railroad miles. The average age of a dated element fell by 21 months, and the average year shifted 17 months later. All this with the help of 30 new mappers – welcome! osm.wiki/OHM/Statistics

Mabuhay! If you’re in Manila for #sotm #sotm2025, come find us for some troublemaker’s stickers!

Help @maprva.org develop an historical street view of Richmond, VA by georeferencing old photographs! The catalog is actively growing and currently includes 1900 photos from the Library of Virginia and the @thevalentinerva.bsky.social georeference.maprva.org

Question for the medieval crowd: does anyone know of a good published map of Europe in 1066? (yes, I have googled)

¡Buenas días de #Medellín y #SOTMLatAm #SotMLatam2025! ¡Agradecemos a encontrar todos los mapeadores aquí! @rub21.bsky.social y Minh Nguyễn van a presentar sobre la tema de #OpenHistoricalMap el sábado.

In August, the #OpenHistoricalMap community added 71,946 dated elements, 12,256 buildings, and 10,475¾ railroad miles. The average age of a dated element fell by 13 months, and the average year shifted 4 months later. All this with the help of 30 new contributors – welcome! osm.wiki/OHM/Statistics

Clues about history are never far and neither is @vespucci.io. With its new support for editing OHM, you can jot down what you learn from a #cornerstone #plaque #SidewalkStamp right on the spot, before the dates get jumbled around in your head. vespucci.io/tutorials/sw...

@itspangler.bsky.social gives an overview of the map resources at @bplmaps.bsky.social and tools for turning them into geodata: openstreetmap.us/events/state... #StateOfTheMapUS #SOTMUS

#SanJose is looking a little busier in #OpenHistoricalMap. Comprehensive historical coverage of #TrafficLights (courtesy of the city) makes it easier to tell where the major streets ran. www.openhistoricalmap.org#map=15/37.33... wiki.openstreetmap.org/wiki/OpenHis... 1960 and today:

Whether you go big or go small, you can’t map it all. But you can lay a foundation to grow and guide a new historical mapping community. Minh Nguyễn mixes as many metaphors as possible to show us how: www.youtube.com/watch?v=5h3y... #StateOfTheMapUS #SOTMUS

We’re aware of a performance issue affecting history pages since we deployed a new version of the website last week. Our developers have identified the cause and are working on a fix. Thank you for your patience. github.com/OpenHistoric...

In July, the #OpenHistoricalMap community added 55,883 dated elements, 13,636 buildings, and 19,387¼ railroad miles. The average age of a dated element fell by 13 months, and the average year shifted 5 months later. All this with the help of 29 new contributors – welcome! osm.wiki/OHM/Statistics

OM US looks for funding. https://openstreetmap.us/news/2025/07/charter-projects-face-uncertain-future/ #osm #OSMUS

For the last few years, we’ve been proud to be the first Open*st*r*Map project to display a #VectorTiles map right on the homepage. But now we aren’t alone anymore, and that’s a much better feeling! Congratulations on this milestone, big sibling!

OpenHistoricalMap is about both big and small. Case in point: @jeffme.bsky.social can’t talk about #empire without talking about 💩 www.youtube.com/watch?v=rkiU... #StateOfTheMapUS #SOTMUS

The OSM US team is proud to share our 2024 Annual Report. Thanks for being part of our mission to advance open mapping across the US! 🔗 openstreetmap.us/download/Ope... #OpenStreetMap #opendata #maps #geospatial #nonprofit #opensource #OSM

Applications for the OSM US Microgrants summer cycle are now open through August 4th! The microgrants support events, travel, and educational initiatives around #OpenStreetMap. Grantees will be notified by September 8th. Learn more in this blog post: openstreetmap.us/news/2025/04...

Our friends at @developmentseed.org are always working on clever tooling that makes it possible to sustain an ambitious community-driven project like ours. Watch Hanbyul Jo (and @marcfarra.bsky.social in spirit) give a rundown at #StateOfTheMapUS: www.youtube.com/watch?v=3xdm...

Working with religious boundaries that change over time? OHM might be the place for you. You can store, collaborate, and see boundaries in their historical context. Here's an animation of the history of the Catholic Diocese of Cincinnati: commons.wikimedia.org/wiki/File:Te... #DH #HGIS

In June, the #OpenHistoricalMap community added 55,401 dated elements, 23,116 buildings, and 15,467 railroad miles. The average age of a dated element fell by 19 months, and the average year shifted 18 months later. All this with the help of 35 new contributors – welcome! osm.wiki/OpenHistoric...

I love finding annotations inside old reference books or maps. This one was a little different: inside cover of a 1960 municipal directory (~5cm/2 inches thick), describing the birth date and place of the first (?) owner.

Added descriptive #AltText from @easterncoyote.bsky.social skeet showing an illustrated version of old world language families. Incomplete as does not call out all named languages from the flows illustrated.

It's hard out there for an online archives with all this AI scraping nonsense. Outages at @archive.org, @britishlibrary.bsky.social, and @bplmaps.bsky.social have significantly impacted online map hunters over the last few weeks. #NotCoolAI #DH #DigitalHumanities

Students have been using map worksheets for a long time. Just ask David!🧑🏽‍🎓 Map: History 2 (1914) #bpl #LMEC #maps #bostonmaps #localhistory #bostonhistory #bostonmuseum #thingstodoinboston #bostontourism

🏛️ images.uba.uva.nl 📍Franeker Binnenstad, Franeker, FR, Netherlands View Map

We're excited to see everyone at State of the Map US today! Thanks to our sponsors for helping to make this event possible! 🔗 openstreetmap.us #FeelGoodFriday #StateoftheMapUS #Boston #OpenStreetMap

@itspangler.bsky.social from @bplmaps.bsky.social holding court in the Leventhal Room at the Boston Harbor Hotel for rapt #StateOfTheMapUS attendees. Thank you, Ian & Leventhal! 🙏🏼🗺️⏳ #OSM #OldMaps

On the walk to #StateOfTheMapUS at #BostonUniverdity and seeing geo / map / history references everywhere... #OSMUS #OpenStreetMap #Boston

#qgis resources repository with 28 icon collections, more than 3k icons. Special focus on #hgis All icons released as CC0/PD. Hope this might be useful and will update my original collection when possible ;) https://github.com/projetoalfobre/alfobre-qgis-resources

RESOURCE: The City of Portland maintains this GIS map of historical streetcar trackage, though no one knows quite who converted the engineering drawings into a CAD file. It's quite accurate, though there are some omissions (e.g., the Council Crest loop). gis-pdx.opendata.arcgis.com/datasets/e43...

The OHM team is en route to @stateofthemapus.bsky.social in #Boston, MA. We'll be providing a few presentations and generally milling about. Please don't hesitate to reach out and ask any questions at all! Thanks to the amazing @osmus.bsky.social team for putting this whole thing together. #DH #HGIS

🗺️Así fue la Rus de Kiev. La Rus de Kiev fue el primer reino eslavo ortodoxo del este de Europa. Dominó la región durante el siglo XI, hasta que fue conquistado por los mongoles. @alvaromerino.bsky.social  lo plasma sobre el mapa https://elordenmundial.com/mapas-y-graficos/mapa-rus-kiev/

New on the blog: we say goodbye to one of our oldest mapping tools... by creating a new map to visualize an archive of a half million user generated images! Read "Farewell, Map Stack" here: stamen.com/farewell-map... Join us at the @stateofthemapus.bsky.social conference this Friday to hear more.

A little awestruck by the great work over at madridxix.es. #HistoricalGIS #DigitalHumanities #UrbanHistory #Madrid