Hi All. I posted sometime back the driver side visor wrapper, that described the operation of the Hydramatic transmission, that the 1954 Oldsmobile Super 88 came with new from the factory. I found this additional visor wrapper describing the operation of the power brake system. The 1954 had a vacuum reserve tank on the underside of the chassis on the driver side that stored vacuum for emergency brake use. It was controlled by a solenoid which opened up when the brake pedal was depressed (hooked to the taillight switch).

Maybe this will help someone at a car show for "original" restoration points (if that's a thing). The pdf is scaled to the proper size. The original wrapper text is upside down on the backside on purpose so that the text is "upright" when the visor is flipped down.

Anyway...Enjoy and I hope this is of use to someone!