What are those mysterious white dots in the backgrounds of old Westerns?

"Overland Stage Raiders" (1938) I started noticing a while back that some of the Westerns and other old movies filmed on the Upper...

When legends collide: Bat Masterson vs. the Skipper (from "Gilligan's Island")

Alan Hale Jr., left, as the Skipper, and Gene Barry as Bat Masterson A confrontation took place in the late 1950s between the man who would ...