Funny you should mention it Bruce. There was once a book with ‘everything’ in it. I picked a (well used) copy up in a very peculiar antiquariat in a Tokyo backstreet a couple of years back. Yeah I know I spend too much time in peculiar city backstreets, but I’m that kind of girl. The book dates back to the early 1970’s (before my time I would add!!) and was one of the ‘secret’ books which made Japan a manufacturing giant. It contained ready made and tested circuits and designs for just about anything electrical/electronic of the time. If you were a manufacturer and decided to start making transistor radios, you opened the book, chose the number of transistors you wanted to use, and picked a ready working design. It didn't matter if you were an industrial giant like Sony, or a garden shed outfit like Tama Denki, all you needed to do was adjust the layout to your plastic case (in many instances a design had several layouts already configured for available plastic cases) and you were in business. Maybe that’s what’s needed now… “101 ready uses for a 10F200”.. duh…