Which preposition to use with carload

of Occurrences 25%

Well, it seemed a shame to go by the Indian Territory, and allow those poor Indians to break their backs carrying money around, and so we sent a carload of bill pasters into the territory and billed towns that would hold us about a week, and we figured that we would clean up enough money to last us all a life-time.

into Occurrences 1%

Billy often thought, as he dumped a carload into the slide, and saw a huge lump of coal that glistened brightly, or glowed with iridescent tints, or was veined with fossil-marked or twisted slate, that perhaps, down below in the screen-room, Ralph's eyes would see the brightness of the broken lump, or Ralph's fingers pick the curious bits of slate from out the moving mass.

Which preposition to use with  carload