Too heavy?

Dear Santa:
Thank you for everything you brought me for Christmas. You continually surprise me with all that you accomplish on Christmas Eve.
However, you missed one thing. I didn’t receive the Stratton/Morley History Book (I have been asking for 11 years!)
Were the books too heavy for your sleigh?
I hope you made it safely back to the North Pole.
Please, please ask your elves to prepare this book real soon.
Sincerely,
Margaret Shields
Atikokan, Ont.