LIFE photographer Allan Grant took 850 photos documenting Hanna-Barbera studios in 1960.
Among the gems included in the Google Cultural Institute are creating cels and merch for Fred Flintstone, Huckleberry Hound, Yogi bear, and some of the most famous voice work and sound effects work in the history of the medium.
Also includes some great shots of artists working from home and relaxing after work.
• LIFE photo collection (via CartoonBrew and Yowp)