[_fs]

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...

[okok3857]

Thanks! Frankly the presentation side of the site needs a lot of work, and it's more about doing the georeferencing work, which sounds like you've already done. But you should get in touch I'd love to discuss further! I've done demo projects with old plat maps like you are working with.