Note; I found this letter nicely positioned on my pillow as I was about to call it a day. They were already in bed.
Dear Mr. E
We from the HOME libraray would love it if you could donate some money or air conditioner.
We need some money because we need to buy some chairs and stationery for the library.
We need the airconditioner because visitors to the library complained that it was very hot. So we were thinking about upgrading our wall fan. The second reason is our library is a big open space so we need to buy an airconditioner so it would be much more comfortable.
Thank you for your cooperation. Hope you would donate some money or buy the airconditioner.
Please inform us as soon as you can.