Laura says she's "almost 18." In fact, Olive Sturgess was 31 at the time of filming.
The Drover Saloon in Seattle is simply a slight redress of the set normally used for the one in Medicine Bow.
In previous episodes, Slim Pickens was referred to as "Slim". This is the first episode where he's called "Hogy", perhaps because he's been assigned to chuck wagon duty.
At approx. the 8:20 mark, you see wheel tracks on the ground under Leland's feet.