Coleccion El Nuevo Tesoro De La Juventud exclusive -

I believe you are referring to the "Colección El Nuevo Tesoro de la Juventud" (The New Treasure of Youth Collection), a famous illustrated encyclopedia for young people published originally by W. M. Jackson, Inc. (and later by other publishers like Codex and Grolier).

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2. The Natural World

Volumes dedicated to zoology, botany, and geology were filled with stunning illustrations (many by renowned European and Argentine artists). Children learned about the migration of birds, the anatomy of a whale, or the formation of mountains through engaging, story-like chapters.

5. Science and Technology

In an age of space exploration, the collection dedicated significant space to physics, chemistry, and astronomy. Simple experiments could be done at home. Sections on “How Things Work” explained the telephone, the radio, the automobile, and—in later editions—early computers and space rockets.

4. A Guide for Collectors and Parents

If you are looking to buy a used set or have inherited one, here is a helpful checklist: coleccion el nuevo tesoro de la juventud

For the Collector/Buyer:

Completeness: A full set usually consists of 20 volumes (though some editions vary between 10 and 24). Check to ensure the "Artes y Letras" volume is included, as it is the most frequently stolen or lost book because it reads like a storybook.
Condition: The "tetragonal" (four-sided) binding was sturdy, but the spines often fade from red to a brownish hue in the sun. Check for water damage, as the glossy pages stick together easily if wet.
Maps: Check the atlas/index volumes. If the maps are loose or missing, the value drops significantly.

For the Parent/Educator:

Is it still useful? Yes, but with a caveat. Science, technology, and political geography have changed drastically. Pluto is no longer a planet; the USSR no longer exists.
How to use it today: Do not use it for current events or science facts. Instead, use it for Art History, Literature, and general vocabulary. The adaptations of classic novels and the art history sections remain timeless. They are excellent for teaching Spanish vocabulary, as the language used is formal and grammatically correct, contrasting with the casual internet Spanish kids often encounter today.

1. What is it?

"El Nuevo Tesoro de la Juventud" (The New Treasure of Youth) is a general encyclopedia specifically designed for children and young adults. It was published by Editorial Cumbre (and later by H.S. Rego).

While the original Tesoro de la Juventud (often associated with W.M. Jackson) dates back to the mid-20th century, the "Nuevo" (New) version was an attempt to modernize the information, layout, and photography for a new generation, roughly spanning the 1970s, 80s, and 90s. I believe you are referring to the "Colección

Comparisons: How It Stacks Up to Modern Resources

While the internet offers immediacy, the Colección offers immersion. Reading a physical volume about the Amazon rainforest, with no pop-ups or notifications, is a meditative experience that modern devices rarely provide.

Later Reprints (1980s–1990s)

As demand waned, cheaper reprints appeared with lower-quality paper and fewer color plates. These are less valuable to collectors but still cherished for their content.

The Origins: A Vision for Accessible Education

The story of the Coleccion El Nuevo Tesoro de la Juventud is deeply rooted in the early-to-mid 20th century, a period when encyclopedias were becoming the standard for home education in Europe and the Americas. Originally inspired by European works such as Arthur Mee’s The Children’s Encyclopædia, Spanish publishers sought to create a tailored version for Spanish-speaking youth. Completeness: A full set usually consists of 20

The initial Tesoro de la Juventud was launched with great fanfare, but it was El Nuevo Tesoro de la Juventud (The New Treasure of Youth) that cemented its legendary status. Published primarily by Editorial Codex in Buenos Aires, Argentina, and later distributed by Editorial Mexicana and other regional publishers, the collection was designed to be both educational and entertaining—a balance that many modern textbooks fail to achieve.

Unlike the dry, dense volumes of traditional encyclopedias, El Nuevo Tesoro de la Juventud was structured around captivating narratives, vivid color plates, and a sense of wonder. Each volume was an invitation to explore.

Collectibility

Original copies of Coleccion El Nuevo Tesoro de la Juventud have become sought-after collectibles. On platforms like eBay, Mercado Libre, and specialized antique bookstores, a full set in good condition can fetch between $200 and $800 USD, depending on the edition and preservation of the color plates.

Collectors look for: