OldMapsViewer

Pair two map sheets in the compare workspace—link zoom for projection—while catalog grids, decade timeline rails, and hearted favorites remain on-device without sign-in or a private backend.

• Browse the atlas catalog: filter by imprint era, sort by holding institution, and open detail views with tappable institutional citations. • Scrub the era timeline: pick decade rails to surface folios that match a lecture narrative or research thread. • Run the compare workspace: load left and right records, link zoom before mirroring to a projector, and scan captions drawn from bundled metadata strips. • Curate a library: save maps for instant reopen from Compare, Catalog, or Timeline.

Offline & network: bundled sample MapRecord entries and illustration assets ship inside the app for classroom demos without connectivity. Settings can probe public HTTPS before you reload a manifest. When online, fetches stay limited to public endpoints—no sign-in wall, and favorites plus reader preferences remain stored locally on the device.

• Settings gathers attribution licenses, reader tuning (high contrast, larger captions), and a manifest refresh control for lecture prep. • Pull-to-refresh on Catalog, Timeline, and Library helps you retry after flaky conference Wi-Fi.

Built for educators and researchers who need plate-era cartography in pocket reach instead of juggling scattered finding aids.