After 1965 dustwrappers disappeared and the books were issued with pictorial matt boards. For the next few years the picutre on the cover of the 401 series replicated the picture that had been on the dustwrapper.
After 1965 dustwrappers disappeared and the books were issued with pictorial matt boards. For the next few years the picutre on the cover of the 401 series replicated the picture that had been on the dustwrapper.