#openhistoricalmap — Public Fediverse posts

Emma Farahay explores the history of Sanborn Fire Insurance Maps in Sandusky, Ohio, in this #SOTMUS2026 presentation. How might these maps be used by local agencies versus local history buffs and mapping enthusiasts? Consider the possibilities of analyzing the minute details preserved in the Sanborn Fire Insurance Maps.

https://youtu.be/OX1jrLJzgoQ

#OpenHistoricalMap #OHM #OpenStreetMap

The Eastern Turnpike operated between the areas of Albany, NY, and Williamstown, MA, from 1799 into the late 19th century. A private toll road, it was typical of the period, and there were many such roads in upstate NY. Sources discussed in this #SOTMUS2026 talk include NYS lidar data, highway department records, old topo maps, and NYS State Archive records.

https://youtu.be/cDtGexVarpQ?si=YOyK2UtvhTcv0JLR

#OpenHistoricalMap #OHM #OpenStreetMap #OSM

CompGen Online-Meeting am 20.08.2026: Domus – ein Open-Data-Projekt zur Häusergeschichte

https://www.compgen.de/2026/08/compgen-online-meeting-am-20-08-2026-domus-ein-open-data-projekt-zur-haeusergeschichte/

In August, the #OpenHistoricalMap community added 55,017 dated elements, 12,693 buildings, and 18,888¾ railroad miles. The average age of a dated element fell by 2 months, and the average year shifted a fortnight later. All this with the help of 28 new contributors – welcome!

https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Statistics

In June, the #OpenHistoricalMap community added 257,368 dated elements, 13,964 buildings, and 25,620 railroad miles. The average age of a dated element fell by 30 months, and the average year shifted 30 months later. All this with the help of 37 new contributors – welcome!

https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Statistics

RE: https://mapstodon.space/@ohm/116846683825770924

Last day of the fundraiser and we have a donation matching program up to $500. Never a better time to donate!

#OpenStreetMap #openhistoricalmap #donate #maps

In May, the #OpenHistoricalMap community added 105,036 dated elements, 13,301 buildings, and 88,230 railroad miles. The average age of a dated element fell by 9 months, dipping below a century for the first time since recordkeeping began, and the average year shifted 5 months later. All this with the help of 35 new contributors – welcome!

https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Statistics

In April, the #OpenHistoricalMap community added 137,660 dated elements, 106,732 buildings, and 37,220¼ railroad miles. The average age of a dated element fell by almost 2 years, and the average year shifted 17 months later. All this with the help of 36 new contributors – welcome!

https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Statistics

Join us tomorrow evening for #SouthBayMapNight, online from 7 PM onward. Get a friendly intro to #OpenStreetMap and #OpenHistoricalMap, share what you’ve been mapping, and learn about new integrations with Wikimedia wikis.

RSVP: https://osmcal.org/event/4705/ or https://www.meetup.com/bay-area-openstreetmappers/events/314265236/

Map2Go Build 3 out now!

https://testflight.apple.com/join/dkAu1Sy1

+ New color schema
+ Imagery offset
+ Filter views & destinations
+ #OpenHistoricalMap support
- Bug where overzoom caused imagery disappearance
+ Quick bar customization
+ Custom presets
~ Multiple suggestions if available
+ Custom address fields
- Commons & Panoramax missing OSM link bug
+ Wikidata suggestion if absent / shared name / proximity / P625
+ Background uploading
+ Notifications when uploading is done
+ Various fixes & improvements

In March, the #OpenHistoricalMap community added 643,241 dated elements, 18,358 buildings, and 5,816½ railroad miles. The average age of a dated element fell by 24 years, and the average year shifted 17 years later. All this with the help of 28 new contributors – welcome!

https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Statistics

Community members are scheduled to present at events in at least four countries in the next few months. Our event calendar has never looked so international! 🇦🇹 🇩🇪 🇺🇸 🇲🇽

https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Events

Are you interested in name-dropping #OpenHistoricalMap in an upcoming conference talk, organizing a historical mapathon, or live-streaming your editing session? Let us know! We’ll help get the word out and share ideas for making it a success.

Thank you to all the donors who have supported OpenHistoricalMap's fundraiser. We are more than 50% away from the timely goal of $2,026.

Donate: https://openstreetmap.app.neoncrm.com/forms/ohm-2026

Help us get there! Your investment will go directly toward enhancing OHM's dependability and usability.

#OpenHistoricalMap #OHM #OpenStreetMap

とても久しぶりに #openhistoricalmap を編集した理由がこれ
https://www.openhistoricalmap.org/node/2147329304
今朝見た夢で過去に実在したミスドの一店舗が出てきたので、同じ建物を使っている後の店舗を街路写真から見つけてその場所に作成しておきました
開業日が全く記憶にないためタグ付けできず、紀元前から存在することになっています…

Oops! #OpenHistoricalMap was supposed to be a map of history, but then the linguists found us and turned us into an accidental map of the history of writing. @mxn shows how we and @maplibre are bringing #HGIS to more language traditions all over the world:

Recording: https://www.youtube.com/watch?v=xoqwUHvYsrs
Slides: https://commons.wikimedia.org/wiki/File:An_Accidental_Map_of_the_History_of_Writing.pdf

#UTW2025 #internationalization

⏰️ There is still time to sign up for tonight's #OHM #Mappy Hour! ⏰️

Join the #OpenHistoricalMap team for a Mappy Hour on Wednesday, March 4th, from 8-9 pm ET.

🔗 https://openstreetmap.app.neoncrm.com/np/clients/openstreetmap/event.jsp?event=200

It's the perfect opportunity to join if you are OHM-curious!

In February, the #OpenHistoricalMap community added 47,171 dated elements, 5,175 buildings, and 7,924¾ railroad miles. The average age of a dated element fell by 10 months, and the average year shifted 5 months later. All this with the help of 43 new contributors – welcome!

https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Statistics

Help us make 2026 an historic year by participating in our first-ever donation drive! Your generous donation will go directly toward making #OpenHistoricalMap easier to use and contribute to and ensure that our services remain available and reliable as demand increases. Find out more about the #fundraiser and our plans for 2026 on the forum:

https://forum.openhistoricalmap.org/t/donate-for-an-historic-2026/678

#donate

Ran a fun Palestine Open Maps mapathon yesterday with Yara Sa'di-Ibraheem. She's researching communications infrastructure in Palestine during the British colonial era, so we extracted the telecom infrastructure in the historical maps using the Tasking Manager, based on Yara's paper: https://doi.org/10.1016/j.polgeo.2024.103242

We got a lot of work done! Blue squares are the ones that have been worked on. There's a long way to go, but good progress.

#PalOpenMaps #uToronto #OSM #mapathon #OpenHistoricalMap #hotosm

In January, the #OpenHistoricalMap community added 65,731 dated elements, 9,668 buildings, and 15,303½ railroad miles. The average age of a dated element rose by more than 7 years, and the average year shifted more than 4 years earlier. All this with the help of 39 new contributors – welcome!

https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Statistics

Tomorrow at 7 PM, join the local #OpenStreetMap and #OpenHistoricalMap community for #SouthBayMapNight! We’ll continue working on data imports and help anyone who’s new get the basics of contributing.

RSVP at https://osmcal.org/event/4485/ or https://www.meetup.com/bay-area-openstreetmappers/events/313180734/