I was just looking around on line and found that Google has a on line book section. In that massive selection of online books I found the Model Engineer's Handybook. A great book to look through. Here is a link to it. Check it out.
Mel
http://books.google.com/books?id=68VKAAAAMAAJ&pg=PA10&dq=model+engines&as_brr=1#PPA1,M1
Mel
http://books.google.com/books?id=68VKAAAAMAAJ&pg=PA10&dq=model+engines&as_brr=1#PPA1,M1