Fr 037 Crow Indians Fire into the Agency FredericRemington sqs Frederick Remington (1861-1909)

The picture has something of this: people, cavalry, group, many, man, mammal, group together, seated, engraving, military, transportation system, weapon, war, wear, skirmish, several.
Perhaps it’s a group of men riding on the backs of horses next to a man on a horse with a spear in his hand and another man holding a gun in his other hand.