This handy guide will help you to identify all the NOS parts used to assemble the fresh air ventilating system  used on those beautiful Olds cars built in  1949 1950 1951 and 1952. The part numbers have been obscured on the examples you see on this auction, what I will be sending you is a sheet with exploded views showing pictures of the individual parts that made up the fresh air ventilation system  along with the original NOS Oldsmobile part numbers for each part, invaluable information for hunting on Ebay or cruising the aisles at the swap meets looking for NOS parts for your classic Olds. There is no quicker way to find a part on ebay than by searching with the NOS part number.  The information that you receive will be blown up and printed on an easy to read 11 X 17 sheet of paper. This  will be mailed to you via 1st Class Mail folded twice to fit in a 6 X 9 envelope. Some customers have requested that I mail these in a cardboard tube so that they can laminate them in plastic. I can do that for an additional $13.00 to cover the extra postage. Olds-6 Olds-7