We have 3 daughters who grew up very close. There is only 37 months from the oldest to the youngest. Our 2 an 3 year old girls wanted to take the baby for a wagon ride. When we checked on them, this is what we found. Our youngest appeared to be pushing her sisters in the wagon. She wasn't walking then. This was taken in Spring 1990. We still have the wagon and enjoy giving our grandkids rides now.