The "King of English", H.W. Fowler wrote A Dictionary of Modern English Usage. Although "modern linguists are almost by definition incapable of understanding the function of a book like Fowler’s Dictionary", the "half-educated Englishman of literary proclivities" who just wants to know: "Can I say so-&-so?’" may now buy the classic first edition of the Dictionary again. An earlier book, The King's English, is free for anyone seeking advice on Americanisms, Saxon words, the spot plague, archaism or split infinitives.
The UCLA Fowler Museum of Cultural History has an extensive, searchable online collection. It focuse on material art and household items and has objects from all over the world. The website can be browsed either by geographic orgin: Africa, Asia, North and Central America, Pacific, South America, or through its two exhibits, Intersections: World Arts, Local Lives and Fowler in Focus. Some of my favorite objects (but really, everything is entrancing) are The Blind Scholar (a Taiwanese handpuppet), Chikunga (a Zambian mask) and a stirrup spout bottle which looks like a puma eating a piglet (Peruvian). All items have accompanying descriptions and some have short texts or audioguides with further information.