With today’s mattresses that support you and wrap you in a cloud top it’s hard to believe that a sheet of plywood under your thin 50’s or 60’s mattress would make you sleep better! In the attic of an old Dayton home there was, an abandoned antique, if you can believe it, the “Famous De-Lux Rest-Well trademarked Bed Board” made of genuine plywood twice as rigid as any other material. Ideal for backaches and all pains and aches due to an over soft bed.
This must not have been a fast seller as a Google search did not find any mention of the company! It’s amazing what we see in old attics, basements and crawl spaces while we perform our inspections.