During the 1960s, Eureka progressed beyond manufacturing sturdy but heavy canvas to market to the burgeoning outdoor camping industry. Lightweight cotton cloth tents accounted for 90% of the company's sales, which were strongly supported by news of Eureka's role in the first all-American Mount Everest expedition and the development of the first free-standing, quick-to-set-up tent, the Draw-Tite. Towards the end of the decade, Eureka experimented with making lightweight tents that did a better job than the cotton tents of holding up to the elements and produced the Mt. Katahdin, one of the first high-volume double-wall construction nylon tent coated with waterproof urethane.