One of my fav old-time movies on that is "The Grapes of Wrath", never get tired of watching Henry Fonda Joad taking his family west.
There's a couple of places out of the Dust Bowl area, that I guess are considered ghosts now. One is Bagdad CA. Off I-40, at Ludlow is a loop road SE, which was old rte 66 that re-connects 17 mi west of Needles. Bagdad is apprx 8 mi west of Amboy. Those other towns (Amboy, Cadiz) may be worth looking at while in the area, especially as an update report.
The other, between Kingman and Seligman, AZ is another rte 66 loop road. IIRC, Peach Springs, and the other 4 towns shown on that rte are also ghosts, though not sure how many of them are. Again, possible report to update for gt'ers unable to get out and about.