Whereas the 1966 WRTH cover was a dull, blue-grey colour, the 1966 Summer Supplement was in a bright blue with a semi-hard cover. There was also an updated 'Shortwave Stations Of The World' insert in a blue paper in the center of the book, numbered between A and P!
    Articles also started appearing, such as 'Repair Your Radio' and 'Learning Languages'.

Print Country: Denmark
Pages: 80
Broadcaster Ads: V. Denmark, R. Moscow, R. Malaysia, TWR, R. Australia
Maps: Yes, time zone
Price: N/A