An experiment in accessing a photo from Album Archive:

Joshua Tree N.P. (Best of)

See this useful resource.

I use the Photos Direct Link Chrome extension to get a link to the album cover photo. (Just make sure the photo is shared publicly. It’s best to test in an incognito window. It is necessary to restart Chrome after adding the extension and before using it.) The link target is the regular Google Photos album link.

Update 2023-06-01:
Fixed broken links and reworded.