alt Hacker NewsI developed and maintain this site so I am both very happy to see it get posted here and also watching htop intently...
I wanted to point out it is a crowdsourcing project, so every overlaid page you see has been placed there by a person, often through large institutional efforts at universities, but also individuals just looking to learn about their hometown through these old maps. Thanks for the interest!
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Something seems broken with the Tampa, FL map. I get an unauthorized page:
https://oldinsurancemaps.net/map/YK41FR
And this shows no volumes available:
https://oldinsurancemaps.net/viewer/tampa-fl/#/center/-84.77...
Same thing for Key West, FL.
Great work! I started georeferencing old plat maps and aerial photographs from my area in QGIS and realized quickly it would be hard to ask other for help without a platform like this.
I’ll try running my own and see about importing existing work. Have you thought about extending the public site scope beyond insurance maps?
Thanks for making this, I look at Sanborns all the time doing historic preservation-related work.
Is there a way to quickly search for a specific address or select a point and then see the relevant map? Larger cities have Sanborns covering many volumes, and I see I can use sliders to turn them on and off to find the relevant one, but I wanted to make sure I wasn't missing a quicker way of finding a specific address.
Do you use IIIF for this? Do you know about https://allmaps.org/ ?
Hi Adam! Adam runs really fun events where you get to help him annotate the maps if you’re ever in the New Orleans area
Funny how this pops up on hacker news today. I have been working on an off and on again project in the same vein. But instead of sanford maps, I have been ripping and downloading GLO surveys. I now have about 3TB worth of 200k+ mid 1800 surveys done by the USGS (GLO at the time). My next step was to create a method of presenting this data. Do you think that your OHMG would help me here?
Its a similar problem that you faced, stripping off the extra image data from the map, then overlaying them on a base map. I might have a slightly easier time, since these surveys mostly line up to existing township/ranges of the PLSS, not at individual house/street level like the sanborn maps. I've manually done the process many times, most in ArcGIS, but have used a few others (like oldmapsonline). Your site was new to me, and the presentation looks great.
Here's an example of the type of survey I'm working with. https://www.oldmapsonline.org/en/maps/06317a09-5426-41e0-aa8...