Has This Ever Happened To You?
I was looking up something in Williams' Index, while sitting at my computer desk and holding the book in my lap. (The book is 1668 pages; I'm afraid if I put it on my desk it'll demolish it.) Once I found the item of interest, instead of turning to that page in the book, my first instinct was to turn to the computer and enter the page number into a search engine. HA! Talk about "cross-referencing".