Looking for kids’ fiction book between 1965-1976 that is about a quetzalcoatl. I remember that it was scary. I got it in my elementary school library so it was about 3rd-5th grade level. Children conjured up a quetzalcoatl by accident and it turned out to be evil and dangerous? Possibly turned an old feather boa into a quetzalcoatl using some magic dust they may have found in an old jewelry box.
Ha, just after I posted this, I found it. It is The Apple Stone by Nicholas Stuart Gray. I ordered a copy from England via ABE.
Does anyone else remember reading this??