Adam Cox

Debugging help is indispensable!

Unsurprisingly it was a CORS error... everything is _always_ a CORS error. It works now!

(account switching) hm, good findings, I was just getting this up and running in R. I'll compare the details of these responses and should be able to alter the OIM response to work better. Some of those response headers don't need to be included in tilejson so I should clean that up anyway.

A georeferenced Sanborn map sheet that shows significant distortion (Worcester, Mass., 1950, Vol. 3, p 343 (partial). The map has a few blocks but is distorted near the area of a curved road on the east side of the page.

From some recent activity, here's a rare but good example (from Worcester Mass.) of where the Thin Plate Spline transformation makes sense for #georeferencing #sanborn maps. Curved roads out in space are sometimes drawn without good scale and need extra distortion oldinsurancemaps.net/layer/72727

My eyes just glaze over and I hit enter until all of those purple screens are gone

We were lucky to get you at the beginning of this bowling Renaissance!

Perfect! Yes the Springfield georeferencing was done by a user who got in touch out of the blue and got to work on those maps, still not sure who that was!

Great! Please don't hesitate to reach out if you need something or find issues with the site. Would love to learn more about this book sometime!

Flyer for two community georeferencing events: Sept 16th & 23rd, at Second Line Brewing in New Orleans, LA.

If you are in the New Orleans area, come to one of our upcoming Georeference-a-thons at Second Line Brewing! Tuesday evenings, the 16th and 23rd. RSVP form here: tiny.cc/georef-2025. We'll be focusing on 1895 Duncan Plaza area and hearing from archaeologists who did work there over the summer.

This started as a "here's a link to a recent talk recording" but I ended up repurposing some slides and writing more about how the warping process works within the system.

Are there any options for running a serverless patterned STAC endpoint? Or even better, a fully static STAC-metadata store that requires the client to do the filtering?

I see that https://github.com/stac-utils/stac-fastapi can use a parquet storage as its backend, which seems like it could get […]

I'll be doing a nice long talk this Wednesday morning at 11am central time, open to everyone! Sign up through the link.

1895 Hull-House wage and nationality maps, welcome to your forever home!

Chipped away at this over the last couple weeks, 425gb off the server and up in the air. Really throws the door open for future possibilities...

amtrak’s marketing team gets it

📣 The Healthy Regions & Policies Lab is looking for a Postdoctoral Scholar for the 2025-26 academic year!

🧑‍🎓 Learn more about position compensation, benefits, and requirements here: healthyregions.org/2025/06/06/p...

📅 Apply by 11:59 PM CDT on Tuesday, July 1st, 2025

Glad to hear it and thanks for trying it out! "therapeutic" needs to go on the testimonials page if I ever make one

In the meantime checkout this walkthrough that gives an overview of the process: about.oldinsurancemaps.net/walkthroughs..., and you can find other docs/info from there as well. Some of the docs are a bit out of date, but still close enough to get started. Don't hesitate to DM me with questions!

You bet. I've added the 1887 vol. 1 map here: oldinsurancemaps.net/map/sanborn0.... You can make an account then go to that page and click "Load documents". Just let it run for a bit (I'll check on it too later)

Street widths not to scale! More examples? Thought it would be useful to start a post about this, because its come up a few times recently, and we’ve had a discussion on GitHub about it in the past as well. Please chime in with any thoughts or...

We wrote a bit about it here: forum.openhistoricalmap.org/t/street-wid...

Sanborn Maps | The Library of Congress Search results 1 - 25 of 45.

@ktflghm.bsky.social I'd be happy to add any of these volumes to @oldinsurancemaps.net if you would like to georeference them there! The workflow is straight-forward and you can download any geotiffs or use XYZ/WMS tile layers in whatever software you want. www.loc.gov/collections/...

On @oldinsurancemaps.net oldinsurancemaps.net/san-francisc... you can find hundreds of georeferenced sheets from 1950, done by the team at the University of Richmond's Digital Scholarship lab.

Yeah it's a strange thing about the SF Sanborns, all the streets are drawn very wide. For the team working on these, I added a parcel boundary layer (used #pmtiles @protomaps.com !) so they could split each street and georeference each block individually, snapping to parcel lines.

Seems to me that our current dependence on GPS is fed by an expectation that we always go the quickest route and know exactly where we are at any moment. If that expectation were muted we would be happier to miss a turn sometimes and ask for directions when needed.

ERIS Information Inc. Sees Resolution to Longstanding Lawsuit EDR and ERIS have announced the resolution of their dispute and lawsuit involving EDR’s claims of copyright infringement and ERIS’s claims of antitrust viola...

The six-year Sanborn copyright case has been settled! Started with EDR (now LightBox) suing ERIS and right away ERIS counter-sued with a lot of claims. Looks like ERIS came up big in the settlement with a valid license to distribute all copyrighted Sanborn maps: www.businesswire.com/news/home/20....

I'm on a mission to find indie game developers using OpenStreetMap!

We want to feature their work at @osmus.bsky.social. How can I connect with this community?

UChicago's Data Mirror DRP partner's UChicago Data Mirror has started collecting federal data of interest to the University of Chicago community.

Celebrating our partners @ UChicago Libraries and @dsi-uchicago.bsky.social #ittakesavillage www.datarescueproject.org/uchicagos-da...

If a foreign adversary snuck into our Federal budget and cut science research and education the way we’re cutting it ourselves — strategically undermining America’s long-term health, wealth, and security — we would likely consider it an act of war.

We spent an entire paddling season researching and paddling across the Twin Cities to create this guide. The Star Tribune has never put out a guide this comprehensive. Get out on the water, people. It's really the best thing you can do this summer.

www.startribune.com/canoe-kayak-...

Indeed! No one has georeferenced Portland maps on there yet, but please get in touch with me if you would like them added so you can do it (it's a crowdsourcing project). Also note: @oldinsurancemaps.net -- though I have yet to make an inaugural post....