Handy Nasty

A little over a week ago I was staying at a friend's apartment in the lower east side of Manhattan. I woke up and got myself a cup of tea and as I sipped it I noticed a large book on the shelf. It was on the Han Dynasty but all the letters were capitalized and the space between the N and the D was very slim and I wasn't wearing my glasses and I'm dyslexic to start with. To me it read, HANDY NASTY. I wondered what that book was all about.