Susan Robinson: The Central Ohio Chapter of the American Theater
Organ Society (ATOS) has for sale, or did have, a book entitled
"The Amazing Pipe Organ Book" written especially for children.
It was, or is, $18.00. Go to ATOS.org, then chapters/OHIO/CentralOhio
chapter/site map/ shop COTOS.  And, if you want a good laugh, go to
humor archive and click on E Power Biggs.  Photos of my old glass
slides are listed I believe under, surprisingly, "Glass Slides"

John Adams