I still have my 1979 World Book set (plus the 1980 Year Book!). I part-exchanged a 1952 set I'd inherited from an older cousin - many of the articles hadn't cha

I still have my 1979 World Book set (plus the 1980 Year Book!). I part-exchanged a 1952 set I'd inherited from an older cousin - many of the articles hadn't changed in the interim. It still serves as an excellent stabilizer for a set of freestanding bookselves.