A protector adapted to accommodate a transparency inserted therein in a moist state, the transparency drying out while in the protector and being thereafter maintained in clean, dust free and dry condition so that it is useable with an overhead optical projector which casts {HEAD ~ the image} carried by the transparency onto {TAIL ~ a viewing screen} 
carried onto
A protector adapted to accommodate a transparency inserted therein in a moist state , the transparency drying out while in the protector and being thereafter maintained in clean , dust free and dry condition so that it is useable with an overhead optical projector which casts { HEAD ~ the image } carried by the transparency onto { TAIL ~ a viewing screen }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL