At 11:14- the letter reads: "I Love You" and it is signed: "Ray".
The guitar instrumental and vocal at the end of the episode is "Hallelujah" by Jeff Buckley from his 1994 album, "Grace." The song was written by Leonard Cohen.
Cast member Lou Diamond Phillips (born 1962) and guest star C. Thomas Howell (born 1966) were teen movie heartthrobs in the 1980s. Phillips starred in La Bamba & Young Guns. Howell was in The Outsiders.
When Walt says: "Teeth haven't been floated" he means that the sharp edges need to be filed down.
First appearance of Jacob Nighthorse, who is in the tent with Walt & Henry at the beginning but does not have lines of dialogue.