Embed a public land
Add a live card for any site to your own web page. Cards update on their own: when the managing agency posts a closure or the National Weather Service issues a warning, your page shows it within the hour. Free for anyone to use.
A map of many places
Show every public land, or just a state, an agency, a type or the places with a Roosevelt connection, on one map. Leave a box empty for all.
The whole directory
Put the full directory on your own page: the search, the results and every site's full page, with maps, history, alerts and the Roosevelt connection, without the Library's banner. Readers click through without leaving your site. The frame grows to fit what it shows, and the page they are on is kept in your page's address, so links and the back button work.
Where scripts are not allowed, use an iframe instead. It works the same but cannot resize itself, so give it a fixed height:
Other ways to embed
Iframe map (works where scripts are not allowed, such as some content management systems):
Several sites on one map: list slugs separated by commas in the site parameter of /embed/map.html.
Your own design: use the open data directly.