Vintage 70s Disney's Wonderful World of Knowledge Set (3)

Vintage 70s Disney's Wonderful World of Knowledge set of three. Includes #8 Treasures of the Earth, #10 Myths and Legends, and #10 Holidays Around the World.  #8 has damage to cover (see photos), otherwise they are all in good condition. Each measures approximately 11.5" x 9" x .5".