Helen's Babies, by John Habberton. Part IV.

In this hilarious novel, Harry Burton, a bachelor white-goods salesman, goes to take care of his sister Helen's two little boys for ten days while she and her husband are out of town. Helen says, "The children won't give you the slightest trouble; they're the best children in the world!" but, as you can imagine, Toddie and Budge are always up to something, and all sorts of comic mischief ensues. 

It just so happens that there's a lovely young lady in the neighborhood whom Harry admires very much, but she always seems to be passing by when he's deep in some terrible mess of the boys' making...