Letter from Elizabeth Bilson to Mr John McCann, Polaroid Corporation, 730 Main Street, CAmbridge, Massachusetts Thanks him for the five vectographs and the four pieces of round polaroid glass they have received, These items are of great help in getting on the road at least two of our displays, They would very much appreciate more vectographs, whenever Polaroid can send them, for the rest of the displays. Cutting the glass into the lorgnette frames does not seem to be a problem so asks for eight more. 21 DEcember 1970