I think it was on a book cover, and it has a Heinlein vibe to it. A human-shaped robot has a ‘picking bag’ slung over its shoulder. I think it has a sombrero-type hat. The robot is filling the roll that migrant workers do today, manually harvesting crops. There may or may not be a space ship flying by in the background, and the robot may or may not be looking at it.
Identify, please?