John Dukakis is the son of one-time presidential candidate Michael Dukakis.
Right before Patrick Labyorteaux (Andrew) gets assaulted, you can hear him whistling "Oh Susanna." He also sang this song with Laura, Mary, and Carrie in Season 4's The Wolves, when they were in a frightening situation.
Even though it's been a while since Alice Garvey died, this is the first time since that horrific Season 6 episode that we see Jonathan and Andy really talk about it and grieve together. In fact, when the death first happened, Jonathan was very standoffish and didn't do much to help his young son through the tragedy, so this can be counted as the first time that they really let it all out.
Actor John Larch, here playing Arthur Mahoney, was good friends with famous actor/director/screenwriter Clint Eastwood, and appeared in his movies Dirty Harry and Play Misty for Me.. Larch died in October 2005.
This story is set almost completely away from Walnut Grove and revolves around Jonathan and Andrew Garvey.