Non-Fiction for Children with Autism

I often read that non-fiction appeals more to 
young readers with autism than fiction does.
I wish that the writers would specify more about
the readers and what their specific diagnoses are,
as I suspect that this is especially true of young 
readers with Asperger's.
Non-fiction makes a strong appeal to a 
logical mind that sometimes motivations,
emotions and behavior confusing. On the
other hand, books without narratives can
be extremely challenging to young readers
who need a logical progression from page
to page. I know there are blends of the two
for adults-perhaps someone knows of a book
that balances fact and narrative well for kids?
My son is working on a science project about a
stream, so we've dipped into the Scholastic Atlas of Weather
Here is what my son learned about water and weather:
"Water is found everywhere.
Rain falls from nimbostratus clouds that cover the sky.
Heavy rain falls from cumulonimbus clouds.
Water droplets encounter warm air followed by cold air to make ice    
pellets.
Ice crystals fall to the ground in Winter."
At first he wrote,  "I swim in water in Summer.
Water is beautiful." 
He could not remember anything he had
read. So I asked him to sit with the book
next to him and write five sentences from
it.
As you can see, so far we have not found
a non-fiction book that interests my son.
-Spectrum Mom