Track and Field Day

I have been collecting money for track and field day shirts and crossing off names as payment came in. The money and list was sent to the office for safe keeping during reading night. Mr. Hoekstra assumed I had collected from all students and tossed the sheet I was keeping track on. I know not everyone paid, but I don't really know who did and who didn't. If you know you have NOT yet paid, could you please send $7.00 in an envelope to cover the cost ASAP?