In the February issue of Harper's , in the "Easy Chair" column near the front, John Crowley has a column about the Encyclopedia Britannica, and in general about the fun of old-fashioned alphabetized reference books, the sort of thing we used for reference before we had cyberspace and wikipedia. Given the alphabetized structure, Crowley writes, "any search for anything passes through things that have nothing in common with it but an initial letter. It's impossible not to abstract something from some of them. Look up 'Dog' ( Damascu to Educ ) to study the attractive plates ... and you may notice the nearby entry for 'Dogger Bank' ('an extensive shoal in the North Sea') and the sea battle fought there on January 24, 1915, which you had not previously heard of." Indeed. That was and still is the fun of browsing through such works. Soon Crumb is on to the sales tactics of the old-fashioned door-to-door encyclopedia salesmen. But t...