#Leaded: 1957 Hardy Boys
Book | Books | Hardy Boys | Vintage Book | Vintage Books | XRF Testing | XRFTesting
1957 Hardy Boys Book. The Ghost At Skeleton Rock. Hardcover. Cover Image (under jacket): 835 +/- 35 ppm lead. Interior pages: 74 +/- 12 ppm lead. Tested with an XRF instrument. Personally I avoid letting my children use vintage books, because they almost always test positive for lead (plus we live near Powell’s, one of…