Hi again. I dont know of any books written in egyptian arabic but i just wanted to let you know of another download. I ansswered ur last question with the Kullu Tamam download but there is another book I have, i bought this one with Cd's from the UK but I thought it was excellant.
When you download this just select the
Jane Wickwight -Colloquial Arabic of Egypt Complete beginners course
Both PDF (book) and Mp3's (CD's). the rest of the collectiion is classic arabic, but this book is really good.
It also has a lot of paragraphs written in egyptian arabic which may be what ur looking for.