Sphere with Spikes over Lake Tapps traveling West to East in 1960

I was apx. five years old when I suddenly sat up in bed and looked out the window at a ball type greyish object with spikes sticking out of it moving from a westernly direction east and rotating slightly as it moved about 30 mph.  It appeared to be about 50 feet above our converted metro area bus that we used as a sleeping area.  It had window on both sides. I watched the object until it dissapeared above me.  I could not see it above the roof of the bus.
I looked on the other side out the window and did not see it.  I seemed to have stopped over head.  As fast as I awoke I plopped back down asleep. I drew pictures of what I saw for my parents.
Three years later I was in the library at school and noticed a book on UFO,s.  Inside I found a drawing of what I had seen and what others had seen.  It said that others had said they had seen small Greys come out of these spheres.  I don,t remember seeing any of them if there were any but as a kid I remember after reading that being a little scared and wondering if they had run sensors over me and that was what woke me up so suddenly.