"Many say the puzzle piece symbolizes a single trait of autism. All of the puzzle pieces are different and the resulting picture is different for each person," said the message in the notebook.
"We just decided to make this during Autism Awareness Month," said Gary McPherson. "I think this might be one of the first in the country based on Autism."
Nicholas' mother said children with autism are a puzzle on themselves, and that each child diagnosed is different.
"If you know one child with autism you know one child with autism because they may have similar traits but the way they express those traits are totally different," she said.
After the cache is hidden among light debris, McPherson's father sets his handheld GPS to record the coordinates of the geocache, with the box located at North 42 degrees 52.300 feet and West 73 degrees 56.840 feet.
McPherson said he hopes to complete 30 different geocaches over the summer and of the many caches he has done since becoming interested in the hobby three years ago the one at the Christman Nature Sanctuary, in Duanesburg, near a waterfall on the Bozen Kill Creek is his favorite.
For more information about geocaching and about Nicholas' cache, visit Geocaching.com.