Part of the fun of this site is revisiting my collection and finding stamps I had previously not paid any attention to and realizing that there are new questions, the stamps below being a case in point.
What are those people doing following along behind?
What is the rolling contraption behind the tractor?
Are they seeding?
Finally, I can make no sense of what this tractor-like machine below is doing.
Any knowledgeable farmers (or history buffs?)have answers?