RAW or JPEG What id best for creating an iBook?

Question

I have photos in both RAW and JPEG format.  I know that when a RAW file is edited it is saved as a JPEG.  I noticed that the size of the edited RAW file is often smaller than the same JPEG photo. (Sometimes it's up to 2MB or more difference.)  Believing that a larger size photo has more detail do you recommend using one file format over the other (edited RAW v. JPEG) to create an iBook?

Answer 1

I'm sorry ... I may have mislead you by using the term "iBook" was inccorrect.  I want to create a photobook.  iPhoto does processes RAW images.  From iPhoto: "... iPhoto imports RAW-format photos in the same way it imports any other photos, organizes them next to your other shots, and lets you edit them using advanced editing tools designed for RAW photos.  When you edit a RAW-format photo, iPhoto saves the edited photo as a JPEG file (by default) or a TIFF file (if you select that option in Advanced preferences); the original RAW file remains unchanged."
When I edit RAW, the edited file, a JPEG, is smaller than the original JPEG.  (I shot photos in dual format; both RAW and JPEG.  I did this only one time; the first time I used RAW.)  Thinking that a larger size photo is "better" i was wondering what one would recommend using. 
Thanks