URGENT!

I seem to have accidently misplaced my photo binder with all my black and white negatives in it! i normally keep it in my locker in the photo building but last night, when i went to get it to do some prints it wasn't there! Please keep an eye out for it, it's super important since it's my div 3. it's a black plastic clamshell binder. my name's not on it but my photos are 35mm and 645 medium format with contact sheets labeled "bonanza creek ranch", "eave's ranch", "lamy", etc. They're photos of western looking towns and scenery. please tell me if you find it!