Treasure was heavily illustrated in both colour and black & white, the first issue introducing many of the features that were to be popular over the coming years.
'; 'Peeps Into Nature' was a regular nature page; 'How It Happens' began with an explanation of how the post office worked; 'A Picture to talk about' covered a wide variety of subjects from a visit to a pantomime to a children's hospital; 'Tales from Many Lands' was a series of fairy tales from around the world; and a regular story featuring Tufty Fluffytail, the squirrel created to make children aware of road safety.
Two long-running series debuted in the first issue: Treasure also included a number of illustrated children's classics, including The Borrowers by Mary Norton, The Wind in the Willows by Kenneth Grahame, The Water Babies by Charles Kingsley, Pinocchio by Carlo Collodi, Gulliver's Travels by Jonathan Swift, Alice in Wonderland Alice Through the Looking Glass by Lewis Carroll and The Wonderful Adventures of Baron Munchhausen.
The front and back cover were cleared for fourteen weeks to serialise JM Barrie's "Peter Pan" in a comic strip format in 1966.
Amongst the artists who worked on Treasure were Clive Uptton, Phillip Mendoza, Nadir Quinto, C. L. Doughty, Wilf Hardy, Jesus Blasco, Colin Merrett, Luis Bermejo, John M. Burns and Gerry Haylock.