Cocoanut matting, bearskin rug, carpets — there are a number of notable floor coverings mentioned in the Sherlock Holmes stories. But flooring itself is less notable.
Case in point: linoleum, which appears as a passing mention in just three stories, was a popular alternative at the time. What do we know about the history of linoleum, how was it manufactured, and what role did it play in the Canon? It's just a Trifle.