its in the musame when you get the gold coin that is in the fountain you click a book and the person says dont touch that but you can take this old library slip though
you click on the books next to the bed
In the museum of Mordred click on the books in the chair and he gives u the library slip
On astro knights after you got the library slip go to the library in the castle. Look at the library slip,it says nonfiction McM.Go to the lower section of the library and click on the waded piece of paper. Then go down and you go right and walk on the cheese and you have it.
It's a library slip. Take the gold coin from the spaceship fountain that's in the water, and tour the Mordred Museum. His library slip is in a stack of books and shows where the hidden "Secret of the Castle" is located. After you get the slip, go to the castle library (first floor, to the right) and look in the Non-Fiction section, lower aisle, for the McM shelf.
Push on the shelf in "Non-Fiction McM". This is written on the library slip found at the Mordred Museum, which you must first get. (Get the shiny gold coin from the fountain and pay your admission.)
she is in the library
You use the betting slip at the sumo wrestling rink when it is open.
The library slip is needed to get into the Dungeon through the castle library. It provides the location of the secret passageway. Get the gold coin from the fountain and pay your way into the Museum. The library slip is in a stack of books next to the museum operator.
The rolled up paper is on the shelf in "Non-Fiction McM". This is written on the library slip found at the Mordred Museum. (Get the shiny gold coin from the fountain and pay your admission.)
Library book slip
To get the library slip, you must first find the gold coin in the fountain. You'll see something sparkly in the second level in the water. Get it and go to the museum. Use the gold coin to look around. There is a pile of books to the right of the guy, and it has the library slip. Go to the castle library and look for the description on the slip, "McM", on shelves in the lower aisle of the library.
You have to make sure you have Mordred's Library Book Slip before you touch McM. To get you need to get the gold coin by going through the top part of the rocketship shaped fountain. After you go to the Museum a.k.a Mordred's house. Give the guy the gold coin the go to your right. You will see some books and then click on them and I think the guy will give you the Library Slip. Then go to the castle then go to the library and touch McM. -Good Luck.