Law’s Spring, AZ, was observed on July 15, 1859, and described in great detail on p. 67 of Hathi.
https://babel.hathitrust.org/cgi/pt?id=mdp.39015030947298&view=1up&seq=73
Kerlin’s Well, AZ, July 13, 1859, noted twice on p. 52 of Hathi. Beale regards Kerlin’s Well as a “permanent”water supply; it is described again in detail on p. 64.
https://babel.hathitrust.org/cgi/pt?id=mdp.39015030947298&view=1up&seq=60
Union Pass, AZ, Beale is noted in video to have passed thru Union Pass in 1857 @ 0.42, & old road shown @ 3:45 of /4.40 min. AZ Highway 68 now uses Union Pass.
https://www.youtube.com/watch?v=KeUWLNFZAZo
https://www.youtube.com/watch?v=utIPbmOV0Ac
http://southwestexplorations.com/union-pass