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.

I’ll try running my own and see about importing existing work. Have you thought about extending the public site scope beyond insurance maps?

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.

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...

[0] https://oldinsurancemaps.net/more-about-sanborn-maps/